Collaborative Agreements	9 Months Ended
Mar. 31, 2016
Collaborative Agreements
Collaborative Agreements	C.Collaborative Agreements Roche In May 2000, the Company granted Genentech, now a unit of Roche, an exclusive license to use the Company’s maytansinoid ADC technology with antibodies, such as trastuzumab, or other proteins that target HER2. Pursuant to this agreement, Roche developed and received marketing approval for its HER2-targeting ADC compound, Kadcyla, in the U.S., Europe, Japan and numerous other countries. The Company receives royalty reports and payments related to sales of Kadcyla from Roche one quarter in arrears. In accordance with the Company’s revenue recognition policy, $19.4 million of non-cash royalties on net sales of Kadcyla for the nine-month period ended December 31, 2015 were recorded and included in revenue for the nine months ended March 31, 2016 and $13.9 million of royalties on net sales of Kadcyla for the nine-month period ended December 31, 2014 were included in royalty revenue for the nine months ended March 31, 2015. In April 2015, the Company consummated a royalty purchase transaction — see Note D below for further details. During the nine months ended March 31, 2016, $195,000 of cash royalties were recorded resulting from an adjustment recorded in the period related to net sales of Kadcyla prior to the effective date of the royalty purchase transaction. Amgen Under a now-expired right-to-test agreement, in September 2009, November 2009 and December 2012, Amgen took three exclusive development and commercialization licenses. In May 2013, Amgen took one non-exclusive development and commercialization license. In October 2013, the non-exclusive license was amended and converted to an exclusive license, which Amgen sublicensed to Oxford BioTherapeutics Ltd. In December 2015, Amgen advised the Company that it had discontinued development of two product candidates, AMG 595 and AMG 172 that had been covered by two of Amgen’s four exclusive licenses, and in February 2016, Amgen terminated these two licenses. For each of the two remaining development and commercialization licenses taken, the Company is entitled to receive up to a total of $34 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones per license are categorized as follows: development milestones—$9 million; regulatory milestones—$20 million; and sales milestones—$5 million. Amgen (or its sublicensee(s)) is responsible for the manufacturing, product development and marketing of any products resulting from these development and commercialization licenses. In September 2015, Amgen’s IND application under the remaining license not sublicensed to Oxford BioTherapeutics became effective, triggering a $1 million milestone payment to the Company which is included in license and milestone fee revenue for the nine months ended March 31, 2016. The next potential milestone the Company will be entitled to receive under this license will be a development milestone for the first dosing of a patient in a Phase II clinical trial, which will result in a $3 million payment being due. The next potential milestone the Company will be entitled to receive under the May 2013 license will be a $1 million development milestone for an IND becoming effective. At the time of execution of each of these development and commercialization licenses, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and manufacturing of these product candidates, these milestones were deemed substantive. Sanofi In July 2003, the Company entered into a broad collaboration agreement with Sanofi (formerly Aventis) to discover, develop and commercialize antibody-based products. The collaboration agreement provided Sanofi with worldwide development and commercialization rights to new antibody-based products directed to targets that were included in the collaboration, including the exclusive right to use the Company’s maytansinoid ADC technology in the creation of products developed to these targets. No further targets may be added to this agreement and the product candidates (targets) as of March 31, 2016 in the collaboration include isatuximab (CD38), SAR566658 (CA6), SAR408701 (CEACAM5) and one undisclosed target without an associated clinical-stage product candidate. We are entitled to receive milestone payments potentially totaling $21.5 million, per target, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$7.5 million; and regulatory milestones—$14 million. Through March 31, 2016, the Company has received and recognized an aggregate of $20.5 million in milestone payments for compounds covered under this agreement now or in the past, including a $3 million development milestone related to initiation of a Phase IIb clinical trial (as defined in the agreement) for isatuximab and a $1 million development milestone related to initiation of a Phase I clinical trial for SAR408701 which are included in license and milestone fee revenue for the nine months ended March 31, 2015. The next potential milestone the Company will be entitled to receive for each of SAR566658 and SAR408701 will be a development milestone for initiation of a Phase IIb clinical trial (as defined in the agreement), which will result in each case in a $3 million payment being due. The next potential milestone the Company will be entitled to receive with respect to isatuximab will be a development milestone for initiation of a Phase III clinical trial, which will result in a $3 million payment being due. The next potential milestone the Company will be entitled to receive for the unidentified target will be a development milestone for commencement of a Phase I clinical trial, which will result in a $1 million payment being due. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and manufacturing of these product candidates, these milestones were deemed substantive. Under a separate, now-expired right-to-test agreement, in December 2013, Sanofi took one exclusive development and commercialization license. Under this license, the Company received an exercise fee of $2 million and is further entitled to receive up to a total of $30 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones for each license are categorized as follows: development milestones—$10 million; and regulatory milestones—$20 million. The Company was recognizing the $2 million exercise fee as revenue ratably over the Company’s estimated period of its substantial involvement. The Company had previously estimated this development period would conclude at the end of non-pivotal Phase II testing. During the first quarter of fiscal 2015, the Company determined it will not be substantially involved in the development and commercialization of the product based on Sanofi’s current plans to develop and manufacture the product without the Company’s assistance. As a result of this determination, the Company recognized the balance of the upfront exercise fee during the prior period. This change in estimate resulted in an increase to license and milestone fees of $1.6 million for the nine months ended March 31, 2015 compared to amounts that would have been recognized pursuant to the Company’s previous estimate. Pursuant to the license agreement noted above, in October 2015, Sanofi initiated Phase I, first-in-human clinical testing of its ADC product candidate, SAR428926 (LAMP1), triggering a $2 million development milestone payment to the Company which is included in license and milestone fee revenue for the nine months ended March 31, 2016. The next milestone payment the Company could receive would be a $4 million development milestone for commencement of a Phase IIb clinical trial (as defined in the agreement) under this license. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and manufacturing of Sanofi’s product candidates, these milestones were deemed substantive. Bayer In October 2008, the Company granted Bayer an exclusive development and commercialization license to the Company’s ADC technology for use with antibodies or other proteins that target mesothelin. The Company received a $4 million upfront payment upon execution of the agreement, and—for each compound developed and marketed by Bayer under this collaboration—the Company is entitled to receive a total of $170.5 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$16 million; regulatory milestones—$44.5 million; and sales milestones—$110 million. Through March 31, 2016, the Company has received and recognized an aggregate of $13 million in milestone payments under this agreement. In January 2016, Bayer initiated a Phase II clinical study designed to support registration of its ADC product candidate, anetumab ravtansine, triggering a $10 million development milestone payment to the Company which is included in license and milestone fee revenue for the three and nine months ended March 31, 2016. The next potential milestone the Company will be entitled to receive will be either a $2 million development milestone for commencement of a pivotal clinical trial for a second indication for anetumab ravtansine or a $6 million regulatory milestone for filing of regulatory approval for its first indication for anetumab ravtansine. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and supply of cytotoxic agent for this product candidate, these milestones were deemed substantive. Lilly Eli Lilly and Company (Lilly) had the right to take three exclusive development and commercialization licenses under a right-to-test agreement established in December 2011, and took these licenses prior to the expiration of the agreement in December 2014. The Company received a $20 million upfront payment in connection with the execution of the right-to-test agreement in 2011. Under the terms of this right-to-test agreement, the first license had no associated exercise fee, and the second and third licenses each had a $2 million exercise fee. The first development and commercialization license was taken in August 2013 and the agreement was amended in December 2013 to provide Lilly with an extension provision and retrospectively include a $2 million exercise fee for the first license in lieu of the fee due for either the second or third license. The second and third licenses were taken in December 2014, with one including the $2 million exercise fee and the other not. Upon execution of the two licenses in December 2014, the Company recognized the remaining $15.6 million of the $23.5 million of arrangement consideration allocated to the development and commercialization licenses, which is included in license and milestone fee revenue for the nine months ended March 31, 2015. Under the two licenses with the $2 million exercise fee, the Company is entitled to receive up to a total of $199 million in milestone payments, plus royalties on the commercial sales of any resulting products. Under the license taken in December 2014 without the exercise fee, the Company is entitled to receive up to a total of $200.5 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$29 million for the two development and commercialization licenses with the $2 million exercise fee, and $30.5 million for the one development and commercialization license with no exercise fee; regulatory milestones—$70 million in all cases; and sales milestones—$100 million in all cases. In September 2015, Lilly initiated Phase I, first-in-human clinical testing of its ADC product candidate, LY3076226, triggering a $5 million milestone payment to the Company which is included in license and milestone fee revenue for the nine months ended March 31, 2016. The next payment the Company could receive would be either a $9 million milestone for commencement of a Phase II clinical trial under this license or a $5 million development milestone payment with the commencement of a Phase I clinical trial under either of its other two licenses. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s expected involvement in the research and manufacturing of these product candidates, these milestones were deemed substantive. The Company also is entitled to receive payments for delivery of cytotoxic agents to Lilly and research and development activities performed on behalf of Lilly. Lilly is responsible for the manufacturing, product development and marketing of any products resulting from this collaboration. Takeda In March 2015, the Company entered into a right-to-test agreement with Takeda Pharmaceutical Company Limited (Takeda) through its wholly owned subsidiary, Millennium Pharmaceuticals, Inc. The agreement provides Takeda with the right to (a) take exclusive options, with certain restrictions, to individual targets selected by Takeda for specified option periods, (b) test the Company’s ADC technology with Takeda’s antibodies directed to the targets optioned under a right-to-test, or research, license, and (c) take exclusive licenses to use the Company’s ADC technology to develop and commercialize products to targets optioned for up to two individual targets on terms specified in the right-to-test agreement. The Company received a $20 million upfront payment in connection with the execution of the right-to-test agreement. Takeda must exercise its options for the development and commercialization licenses by the end of the three-year term of the right-to-test agreement, after which any then outstanding options will lapse. Takeda has the right to extend the three-year right-to-test period for one additional year by payment to the Company of $4 million. Alternatively, Takeda has the right to expand the scope of the right-to-test agreement by payment to the Company of $8 million. If Takeda opts to expand the scope of the right-to-test agreement, it will be entitled to take additional exclusive options, one of which may be exercised for an additional development and commercialization license, and the right-to test period will be extended until the fifth anniversary of the effective date of the right-to-test agreement. The first exclusive license was taken by Takeda in December 2015, and as a result, the Company recognized $8.6 million of the $25.9 million of arrangement consideration allocated to the development and commercialization licenses, which is included in license and milestone fee revenue for the nine months ended March 31, 2016. Takeda is responsible for the manufacturing, product development and marketing of any products resulting from this collaboration. For each development and commercialization license taken, the Company is entitled to receive up to a total of $210 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$30 million; regulatory milestones—$85 million; and sales milestones—$95 million. The first potential milestone the Company will be entitled to receive will be a $5 million development milestone payment with the initiation of a Phase I clinical trial under the first development and commercialization license taken. At the time of execution of this agreement, there was significant uncertainty as to whether the milestone related to initiation of a Phase I clinical trial under the first development and commercialization license would be achieved. In consideration of this, as well as the Company’s expected involvement in the research and manufacturing of these product candidates, this milestone was deemed substantive. The Company also is entitled to receive payments for delivery of cytotoxic agents to Takeda and research and development activities performed on behalf of Takeda. CytomX In January 2014, the Company entered into a reciprocal right-to-test agreement with CytomX Therapeutics, Inc. (CytomX). The agreement provides CytomX and the Company with the right to test the Company’s ADC technology with CytomX masked antibodies, which it calls Probodies™, to create product candidates for a specified number of targets. Each company has defined rights to test the other company’s technology with its technology under a right-to-test, or research, license, and to subsequently take an exclusive, worldwide license to use the other company’s technology with its technology to develop and commercialize products for the specified targets on terms agreed upon at the inception of the right-to-test agreement. The Company received no upfront cash payment in connection with the execution of the right-to-test agreement. The terms of the right-to-test agreement require the Company and CytomX to each take its respective development and commercialization licenses by the end of the term of the research licenses. In addition, both the Company and CytomX are required to perform specific research activities under the right-to-test agreement on behalf of the other party for no monetary consideration. In February 2016, CytomX took its development and commercialization license for a specified target. An amendment of the agreement executed simultaneously with that license granted CytomX the right, for a specified period of time, to substitute the specified target with another as yet unspecified target. Accordingly, the revenue associated with this license is being deferred until the expiration of that substitution right. With respect to the development and commercialization license taken by CytomX, the Company is entitled to receive up to a total of $160 million in milestone payments plus royalties on the commercial sales of any resulting product. The total milestones are categorized as follows: development milestones—$10 million; regulatory milestones—$50 million; and sales milestones—$100 million. In addition, CytomX may be liable to pay annual maintenance fees if the licensed product candidate covered under the development and commercialization license has not progressed to a specified stage of development within a specified time frame. Assuming no annual maintenance fee is payable, the next payment the Company could receive would be a $1 million development milestone payment with commencement of a Phase I clinical trial. At the time of execution of the right-to-test agreement, there was significant uncertainty as to whether the milestone related to the Phase I clinical trial would be achieved. In consideration of this, as well as the Company’s expected involvement in the research and manufacturing of any product candidate, this milestone was deemed substantive. CytomX is responsible for the manufacturing, product development and marketing of any product resulting from the development and commercialization license taken by CytomX under this collaboration.

C.Collaborative Agreements

Roche

In May 2000, the Company granted Genentech, now a unit of Roche, an exclusive license to use the Company’s maytansinoid ADC technology with antibodies, such as trastuzumab, or other proteins that target HER2. Pursuant to this agreement, Roche developed and received marketing approval for its HER2-targeting ADC compound, Kadcyla, in the U.S., Europe, Japan and numerous other countries. The Company receives royalty reports and payments related to sales of Kadcyla from Roche one quarter in arrears. In accordance with the Company’s revenue recognition policy, $19.4 million of non-cash royalties on net sales of Kadcyla for the nine-month period ended December 31, 2015 were recorded and included in revenue for the nine months ended March 31, 2016 and $13.9 million of royalties on net sales of Kadcyla for the nine-month period ended December 31, 2014 were included in royalty revenue for the nine months ended March 31, 2015. In April 2015, the Company consummated a royalty purchase transaction — see Note D below for further details. During the nine months ended March 31, 2016, $195,000 of cash royalties were recorded resulting from an adjustment recorded in the period related to net sales of Kadcyla prior to the effective date of the royalty purchase transaction.

Amgen

Under a now-expired right-to-test agreement, in September 2009, November 2009 and December 2012, Amgen took three exclusive development and commercialization licenses. In May 2013, Amgen took one non-exclusive development and commercialization license. In October 2013, the non-exclusive license was amended and converted to an exclusive license, which Amgen sublicensed to Oxford BioTherapeutics Ltd. In December 2015, Amgen advised the Company that it had discontinued development of two product candidates, AMG 595 and AMG 172 that had been covered by two of Amgen’s four exclusive licenses, and in February 2016, Amgen terminated these two licenses. For each of the two remaining development and commercialization licenses taken, the Company is entitled to receive up to a total of $34 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones per license are categorized as follows: development milestones—$9 million; regulatory milestones—$20 million; and sales milestones—$5 million. Amgen (or its sublicensee(s)) is responsible for the manufacturing, product development and marketing of any products resulting from these development and commercialization licenses.

In September 2015, Amgen’s IND application under the remaining license not sublicensed to Oxford BioTherapeutics became effective, triggering a $1 million milestone payment to the Company which is included in license and milestone fee revenue for the nine months ended March 31, 2016. The next potential milestone the Company will be entitled to receive under this license will be a development milestone for the first dosing of a patient in a Phase II clinical trial, which will result in a $3 million payment being due. The next potential milestone the Company will be entitled to receive under the May 2013 license will be a $1 million development milestone for an IND becoming effective. At the time of execution of each of these development and commercialization licenses, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and manufacturing of these product candidates, these milestones were deemed substantive.

Sanofi

In July 2003, the Company entered into a broad collaboration agreement with Sanofi (formerly Aventis) to discover, develop and commercialize antibody-based products. The collaboration agreement provided Sanofi with worldwide development and commercialization rights to new antibody-based products directed to targets that were included in the collaboration, including the exclusive right to use the Company’s maytansinoid ADC technology in the creation of products developed to these targets. No further targets may be added to this agreement and the product candidates (targets) as of March 31, 2016 in the collaboration include isatuximab (CD38), SAR566658 (CA6), SAR408701 (CEACAM5) and one undisclosed target without an associated clinical-stage product candidate.

We are entitled to receive milestone payments potentially totaling $21.5 million, per target, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$7.5 million; and regulatory milestones—$14 million. Through March 31, 2016, the Company has received and recognized an aggregate of $20.5 million in milestone payments for compounds covered under this agreement now or in the past, including a $3 million development milestone related to initiation of a Phase IIb clinical trial (as defined in the agreement) for isatuximab and a $1 million development milestone related to initiation of a Phase I clinical trial for SAR408701 which are included in license and milestone fee revenue for the nine months ended March 31, 2015. The next potential milestone the Company will be entitled to receive for each of SAR566658 and SAR408701 will be a development milestone for initiation of a Phase IIb clinical trial (as defined in the agreement), which will result in each case in a $3 million payment being due. The next potential milestone the Company will be entitled to receive with respect to isatuximab will be a development milestone for initiation of a Phase III clinical trial, which will result in a $3 million payment being due. The next potential milestone the Company will be entitled to receive for the unidentified target will be a development milestone for commencement of a Phase I clinical trial, which will result in a $1 million payment being due. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and manufacturing of these product candidates, these milestones were deemed substantive.

Under a separate, now-expired right-to-test agreement, in December 2013, Sanofi took one exclusive development and commercialization license. Under this license, the Company received an exercise fee of $2 million and is further entitled to receive up to a total of $30 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones for each license are categorized as follows: development milestones—$10 million; and regulatory milestones—$20 million.

The Company was recognizing the $2 million exercise fee as revenue ratably over the Company’s estimated period of its substantial involvement. The Company had previously estimated this development period would conclude at the end of non-pivotal Phase II testing. During the first quarter of fiscal 2015, the Company determined it will not be substantially involved in the development and commercialization of the product based on Sanofi’s current plans to develop and manufacture the product without the Company’s assistance. As a result of this determination, the Company recognized the balance of the upfront exercise fee during the prior period. This change in estimate resulted in an increase to license and milestone fees of $1.6 million for the nine months ended March 31, 2015 compared to amounts that would have been recognized pursuant to the Company’s previous estimate.

Pursuant to the license agreement noted above, in October 2015, Sanofi initiated Phase I, first-in-human clinical testing of its ADC product candidate, SAR428926 (LAMP1), triggering a $2 million development milestone payment to the Company which is included in license and milestone fee revenue for the nine months ended March 31, 2016. The next milestone payment the Company could receive would be a $4 million development milestone for commencement of a Phase IIb clinical trial (as defined in the agreement) under this license. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and manufacturing of Sanofi’s product candidates, these milestones were deemed substantive.

Bayer

In October 2008, the Company granted Bayer an exclusive development and commercialization license to the Company’s ADC technology for use with antibodies or other proteins that target mesothelin. The Company received a $4 million upfront payment upon execution of the agreement, and—for each compound developed and marketed by Bayer under this collaboration—the Company is entitled to receive a total of $170.5 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$16 million; regulatory milestones—$44.5 million; and sales milestones—$110 million. Through March 31, 2016, the Company has received and recognized an aggregate of $13 million in milestone payments under this agreement. In January 2016, Bayer initiated a Phase II clinical study designed to support registration of its ADC product candidate, anetumab ravtansine, triggering a $10 million development milestone payment to the Company which is included in license and milestone fee revenue for the three and nine months ended March 31, 2016. The next potential milestone the Company will be entitled to receive will be either a $2 million development milestone for commencement of a pivotal clinical trial for a second indication for anetumab ravtansine or a $6 million regulatory milestone for filing of regulatory approval for its first indication for anetumab ravtansine. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s past involvement in the research and supply of cytotoxic agent for this product candidate, these milestones were deemed substantive.

Lilly

Eli Lilly and Company (Lilly) had the right to take three exclusive development and commercialization licenses under a right-to-test agreement established in December 2011, and took these licenses prior to the expiration of the agreement in December 2014. The Company received a $20 million upfront payment in connection with the execution of the right-to-test agreement in 2011. Under the terms of this right-to-test agreement, the first license had no associated exercise fee, and the second and third licenses each had a $2 million exercise fee. The first development and commercialization license was taken in August 2013 and the agreement was amended in December 2013 to provide Lilly with an extension provision and retrospectively include a $2 million exercise fee for the first license in lieu of the fee due for either the second or third license. The second and third licenses were taken in December 2014, with one including the $2 million exercise fee and the other not. Upon execution of the two licenses in December 2014, the Company recognized the remaining $15.6 million of the $23.5 million of arrangement consideration allocated to the development and commercialization licenses, which is included in license and milestone fee revenue for the nine months ended March 31, 2015. Under the two licenses with the $2 million exercise fee, the Company is entitled to receive up to a total of $199 million in milestone payments, plus royalties on the commercial sales of any resulting products. Under the license taken in December 2014 without the exercise fee, the Company is entitled to receive up to a total of $200.5 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$29 million for the two development and commercialization licenses with the $2 million exercise fee, and $30.5 million for the one development and commercialization license with no exercise fee; regulatory milestones—$70 million in all cases; and sales milestones—$100 million in all cases.

In September 2015, Lilly initiated Phase I, first-in-human clinical testing of its ADC product candidate, LY3076226, triggering a $5 million milestone payment to the Company which is included in license and milestone fee revenue for the nine months ended March 31, 2016. The next payment the Company could receive would be either a $9 million milestone for commencement of a Phase II clinical trial under this license or a $5 million development milestone payment with the commencement of a Phase I clinical trial under either of its other two licenses. At the time of execution of this agreement, there was significant uncertainty as to whether these milestones would be achieved. In consideration of this, as well as the Company’s expected involvement in the research and manufacturing of these product candidates, these milestones were deemed substantive. The Company also is entitled to receive payments for delivery of cytotoxic agents to Lilly and research and development activities performed on behalf of Lilly. Lilly is responsible for the manufacturing, product development and marketing of any products resulting from this collaboration.

Takeda

In March 2015, the Company entered into a right-to-test agreement with Takeda Pharmaceutical Company Limited (Takeda) through its wholly owned subsidiary, Millennium Pharmaceuticals, Inc. The agreement provides Takeda with the right to (a) take exclusive options, with certain restrictions, to individual targets selected by Takeda for specified option periods, (b) test the Company’s ADC technology with Takeda’s antibodies directed to the targets optioned under a right-to-test, or research, license, and (c) take exclusive licenses to use the Company’s ADC technology to develop and commercialize products to targets optioned for up to two individual targets on terms specified in the right-to-test agreement. The Company received a $20 million upfront payment in connection with the execution of the right-to-test agreement. Takeda must exercise its options for the development and commercialization licenses by the end of the three-year term of the right-to-test agreement, after which any then outstanding options will lapse. Takeda has the right to extend the three-year right-to-test period for one additional year by payment to the Company of $4 million. Alternatively, Takeda has the right to expand the scope of the right-to-test agreement by payment to the Company of $8 million. If Takeda opts to expand the scope of the right-to-test agreement, it will be entitled to take additional exclusive options, one of which may be exercised for an additional development and commercialization license, and the right-to test period will be extended until the fifth anniversary of the effective date of the right-to-test agreement. The first exclusive license was taken by Takeda in December 2015, and as a result, the Company recognized $8.6 million of the $25.9 million of arrangement consideration allocated to the development and commercialization licenses, which is included in license and milestone fee revenue for the nine months ended March 31, 2016. Takeda is responsible for the manufacturing, product development and marketing of any products resulting from this collaboration.

For each development and commercialization license taken, the Company is entitled to receive up to a total of $210 million in milestone payments, plus royalties on the commercial sales of any resulting products. The total milestones are categorized as follows: development milestones—$30 million; regulatory milestones—$85 million; and sales milestones—$95 million. The first potential milestone the Company will be entitled to receive will be a $5 million development milestone payment with the initiation of a Phase I clinical trial under the first development and commercialization license taken. At the time of execution of this agreement, there was significant uncertainty as to whether the milestone related to initiation of a Phase I clinical trial under the first development and commercialization license would be achieved. In consideration of this, as well as the Company’s expected involvement in the research and manufacturing of these product candidates, this milestone was deemed substantive. The Company also is entitled to receive payments for delivery of cytotoxic agents to Takeda and research and development activities performed on behalf of Takeda.

CytomX

In January 2014, the Company entered into a reciprocal right-to-test agreement with CytomX Therapeutics, Inc. (CytomX). The agreement provides CytomX and the Company with the right to test the Company’s ADC technology with CytomX masked antibodies, which it calls Probodies™, to create product candidates for a specified number of targets. Each company has defined rights to test the other company’s technology with its technology under a right-to-test, or research, license, and to subsequently take an exclusive, worldwide license to use the other company’s technology with its technology to develop and commercialize products for the specified targets on terms agreed upon at the inception of the right-to-test agreement. The Company received no upfront cash payment in connection with the execution of the right-to-test agreement. The terms of the right-to-test agreement require the Company and CytomX to each take its respective development and commercialization licenses by the end of the term of the research licenses. In addition, both the Company and CytomX are required to perform specific research activities under the right-to-test agreement on behalf of the other party for no monetary consideration.

In February 2016, CytomX took its development and commercialization license for a specified target. An amendment of the agreement executed simultaneously with that license granted CytomX the right, for a specified period of time, to substitute the specified target with another as yet unspecified target. Accordingly, the revenue associated with this license is being deferred until the expiration of that substitution right. With respect to the development and commercialization license taken by CytomX, the Company is entitled to receive up to a total of $160 million in milestone payments plus royalties on the commercial sales of any resulting product. The total milestones are categorized as follows: development milestones—$10 million; regulatory milestones—$50 million; and sales milestones—$100 million. In addition, CytomX may be liable to pay annual maintenance fees if the licensed product candidate covered under the development and commercialization license has not progressed to a specified stage of development within a specified time frame. Assuming no annual maintenance fee is payable, the next payment the Company could receive would be a $1 million development milestone payment with commencement of a Phase I clinical trial. At the time of execution of the right-to-test agreement, there was significant uncertainty as to whether the milestone related to the Phase I clinical trial would be achieved. In consideration of this, as well as the Company’s expected involvement in the research and manufacturing of any product candidate, this milestone was deemed substantive. CytomX is responsible for the manufacturing, product development and marketing of any product resulting from the development and commercialization license taken by CytomX under this collaboration.