License And Collaboration Agreements	3 Months Ended
Mar. 31, 2013
License And Collaboration Agreements [Abstract]
License and collaboration agreements	NOTE 7. LICENSE AND COLLABORATION AGREEMENTS We have entered into certain license, collaboration and discovery agreements with third parties for the development of pain management and other products. These agreements require us to share in the development costs of such products and grant marketing rights to us for such products. We have also licensed from universities, corporations and other similar institutions, rights to certain technologies or intellectual property, generally in the field of pain management. We are generally required to make upfront payments as well as other payments upon successful completion of regulatory or sales milestones. In addition, these agreements generally require us to pay royalties on sales of the products arising from these agreements. These agreements generally permit Endo to terminate the agreement with no significant continuing obligation. For additional discussion of our material license and collaboration agreements at December 31, 2012, refer to our Annual Report on Form 10-K for the year ended December 31, 2012, filed with the Securities and Exchange Commission on March 1, 2013. Commercial Products Novartis AG and Novartis Consumer Health, Inc. On March 4, 2008, we entered into a License and Supply Agreement (the Voltaren^® Gel Agreement) with and among Novartis AG and Novartis Consumer Health, Inc. (Novartis) to obtain the exclusive U.S. marketing rights for the prescription medicine Voltaren^® Gel (Voltaren^® Gel or the Licensed Product). Voltaren^® Gel received regulatory approval in October 2007 from the U.S. Food and Drug Administration (FDA), becoming the first topical prescription treatment for use in treating pain associated with osteoarthritis and the first new product approved in the U.S. for osteoarthritis since 2001. Voltaren^® Gel was granted marketing exclusivity in the U.S. as a prescription medicine until October 2010. Under the terms of the five-year Voltaren^® Gel Agreement, Endo made an upfront cash payment of $85 million. Endo agreed to pay royalties to Novartis on annual Net Sales of the Licensed Product, subject to certain thresholds as defined in the Voltaren^® Gel Agreement. In addition, Endo agreed to make certain guaranteed minimum annual royalty payments of $30 million per year payable in the 4th and 5th year of the Voltaren^® Gel Agreement, which may be reduced under certain circumstances, including Novartis’s failure to supply the Licensed Product, subject to certain limitations including the launch of a generic to the Licensed Product in the U.S. These guaranteed minimum royalties will be creditable against royalty payments on an annual basis such that Endo’s obligation with respect to each year is to pay the greater of (i) royalties payable based on annual net sales of the Licensed Product or (ii) the guaranteed minimum royalty for such Voltaren^® Gel Agreement year. Novartis is also eligible to receive a one-time milestone payment of $25 million if annual net sales of Voltaren^® Gel exceed $300 million in the U.S. To date, annual net sales have not exceeded this threshold and, therefore, this milestone payment has not been paid. The $85 million upfront payment and the present value of the guaranteed minimum royalties was initially capitalized as an intangible asset in the amount of $129 million, representing the fair value of the exclusive license to market Voltaren^® Gel over the initial contract term. We are amortizing this intangible asset into Cost of revenues over an estimated five-year useful life. Due to Novartis’s failure to supply Voltaren^® Gel during the first quarter of 2012 resulting from the shutdown of its Lincoln, Nebraska manufacturing facility, we were not obligated to make any first quarter royalty payment, including the $7.5 million minimum royalty. Accordingly, during the first quarter of 2012, we recorded a reduction to the associated liability and a decrease in the intangible asset. Subsequent to the first quarter, royalties in the amount of $21.6 million were incurred in 2012 representing either a percentage of actual net sales of Voltaren^® Gel or minimum royalties pursuant to the Voltaren^® Gel Agreement. Voltaren^® Gel royalties incurred during the three months ended March 31, 2013 were $7.5 million, representing minimum royalties pursuant to the Voltaren^® Gel Agreement. Endo is solely responsible to commercialize the Licensed Product during the term of the Voltaren^® Gel Agreement. With respect to each year during the term of the Voltaren^® Gel Agreement, subject to certain limitations, Endo is required to incur a minimum amount of annual advertising and promotional expenses (A&P Expenditures) on the commercialization of the Licensed Product, which may be reduced under certain circumstances including Novartis’s failure to supply the Licensed Product. In addition, Endo is required to perform a minimum number of face-to-face one-on-one discussions with physicians and other healthcare practitioners (Details) for the purpose of promoting the Licensed Product within its approved indication during each year of the Voltaren^® Gel Agreement which may be reduced under certain circumstances including Novartis’s failure to supply the Licensed Product. Further, during the term of the Voltaren^® Gel Agreement, Endo will share in the costs of certain clinical studies and development activities initiated at the request of the FDA or as considered appropriate by Novartis and Endo. On December 31, 2012, Endo and Novartis entered into an amendment to the Voltaren^® Gel Agreement (the Voltaren^® Gel Amendment) which reduced the minimum number of Details required to be conducted by Endo and the minimum amount of annual advertising and promotional expenses required to be spent by Endo on the commercialization of Voltaren^® Gel during each remaining year of the Voltaren^® Gel Agreement. During the fourth Voltaren^® Gel Agreement Year beginning on July 1, 2011 and extending through June 30, 2012, we agreed to spend 13% of prior year sales or approximately $16 million on A&P Expenditures. During the fifth Voltaren^® Gel Agreement Year beginning on July 1, 2012 and extending through June 30, 2013, we agreed to spend approximately $4.5 million on A&P Expenditures. In subsequent Agreement Years, the minimum A&P Expenditures set forth in the Voltaren^® Gel Agreement are determined based on a percentage of net sales of Voltaren^® Gel, which may be reduced under certain circumstances, including Novartis’s failure to supply Voltaren^® Gel. Amounts incurred by Endo for such A&P Expenditures were $2.1 million and $3.6 million for the three months ended March 31, 2013 and 2012, respectively. During the term of the Voltaren^® Gel Agreement, Endo has agreed to purchase all of its requirements for the Licensed Product from Novartis. The price was fixed for the first year and subject to annual changes based upon changes in the producer price index and raw materials. The Voltaren^® Gel Amendment reduced the supply price of Voltaren^® Gel otherwise payable under the Agreement. Novartis has the exclusive right, at its sole discretion, to effect a switch of the Licensed Product from a prescription product to an over-the-counter (OTC) product in the U.S. (an OTC Switch) by filing an amendment or supplement to the Licensed Product New Drug Application or taking any other action necessary or advisable in connection therewith to effect the OTC Switch, and thereafter to commercialize such OTC product. Notwithstanding the foregoing, Novartis shall not launch an OTC equivalent product prior to a time specified in the Voltaren^® Gel Agreement, and Novartis shall not take any action that results in the loss of the prescription product status for the Licensed Product prior to such time. Novartis is obligated to notify Endo if it submits a filing to the FDA in respect of an OTC equivalent product. In the event that Novartis gains approval of an OTC equivalent product that results in the Licensed Product being declassified as a prescription product, then Novartis will make certain royalty payments to Endo on net sales of such OTC equivalent product in the U.S. by Novartis, its affiliates and their respective licensees or sublicensees as set forth in the Voltaren^® Gel Agreement. As a condition to the payment of any and all such royalties, net sales of the Licensed Product in the U.S. must have exceeded a certain threshold prior to the launch of the OTC equivalent product by Novartis or its affiliates. The initial term of the Voltaren^® Gel Agreement will expire on June 30, 2013, and we have the option to extend it for three successive one year terms. In December 2012, pursuant to the provisions of the Voltaren^® Gel Agreement, the term was automatically renewed for an additional one year period. As a result, we capitalized, as an intangible asset, $21.3 million, representing the present value of the guaranteed minimum royalties we expect to pay to Novartis AG over the renewal term. The Voltaren^® Gel Agreement will remain in place unless either (i) Endo provides written notice of non-renewal to the other party at least six months prior to the expiration of any renewal term after the first renewal term, (ii) Novartis provides written notice of non-renewal to the other party at least six months prior to the expiration of any renewal term after the second renewal term or (iii) the Voltaren^® Gel Agreement is otherwise terminated in accordance with its terms. Upon extension, Endo is again obligated to make certain guaranteed minimum annual royalty payments of $30 million per year during each successive one-year renewal term, subject to certain limitations including the launch of a generic to the Licensed Product in the U.S. These guaranteed minimum annual royalty payments may be reduced under certain circumstances, including Novartis’s failure to supply the Licensed Product. These guaranteed minimum royalties will be creditable against royalty payments on an annual basis such that Endo’s obligation with respect to each year is to pay the greater of (i) royalties payable based on annual net sales of the Licensed Product or (ii) the guaranteed minimum royalty for such Voltaren^® Gel Agreement year. Among other standard and customary termination rights granted under the Voltaren^® Gel Agreement, the Voltaren^® Gel Agreement can be terminated by either party upon reasonable written notice and if either party has committed a material breach that has not been remedied within 90 days from the giving of written notice. Endo may terminate the Voltaren^® Gel Agreement by written notice upon the occurrence of several events, including the launch in the U.S. of a generic to the Licensed Product. Novartis may terminate the Voltaren^® Gel Agreement upon reasonable written notice (1) if Endo fails to deliver a set percentage of the minimum Details in a certain six-month period under the Voltaren^® Gel Agreement; or (2) on or after the launch in the U.S. of an OTC equivalent product by Novartis, its affiliates or any third party that does not result in the declassification of the Licensed Product as a prescription product, following which net sales in a six-month period under the Voltaren^® Gel Agreement are less than a certain defined dollar amount. Products in Development BayerSchering In July 2005, Indevus (now, Endo Pharmaceuticals Solutions Inc.) licensed exclusive U.S. rights from Schering AG, Germany, now BayerSchering Pharma AG (BayerSchering) to market a long-acting injectable testosterone preparation for the treatment of male hypogonadism that we refer to as Aveed^TM(the BayerSchering Agreement). The Company is responsible for the development and commercialization of Aveed^TMin the U.S. BayerSchering is responsible for manufacturing and supplying the Company with finished product. As part of the BayerSchering Agreement, Indevus agreed to pay to BayerSchering up to $30.0 million in up-front, regulatory milestone, and commercialization milestone payments, including a $5.0 million payment due upon approval by the FDA to market Aveed^TM. Indevus also agreed to pay to BayerSchering 25% of net sales of Aveed^TMto cover both the cost of finished product and royalties. In October 2006, Indevus entered into a supply agreement with BayerSchering pursuant to which BayerSchering agreed to manufacture and supply Indevus with all of its requirements for Aveed^TMfor a supply price based on net sales of Aveed^TM. The supply price is applied against the 25% of net sales owed to BayerSchering pursuant to the BayerSchering Agreement. The BayerSchering Agreement expires 10 years after the first commercial sale of Aveed^TM. Either party may also terminate the BayerSchering Agreement in the event of a material breach by the other party. BioDelivery Sciences International, Inc. In January 2012, the Company signed a worldwide license and development agreement (the BioDelivery Agreement) with BioDelivery Sciences International, Inc. (BioDelivery) for the exclusive rights to develop and commercialize BEMA^® Buprenorphine. BEMA^® Buprenorphine is a transmucosal form of buprenorphine, a partial mu-opiate receptor agonist, which incorporates a bioerodible mucoadhesive (BEMA^®) technology. BEMA^® Buprenorphine is currently in Phase III trials for the treatment of moderate to severe chronic pain. The Company made an upfront payment to BioDelivery for $30.0 million, which was expensed as Research and development in the first quarter of 2012. During the first quarter of 2012, $15.0 million of additional costs were incurred related to the achievement of certain regulatory milestones and were recorded as Research and development expense. We paid this amount in the second quarter of 2012. In the future, Endo could be obligated to pay royalties based on net sales of BEMA^® Buprenorphine and commercial and regulatory milestone payments of up to approximately $135.0 million. Endo may terminate the BioDelivery Agreement at any time upon six months written notice. Unless terminated earlier, the BioDelivery Agreement shall expire, on a country-by-country basis, upon the later to occur of 10 years from the date of first commercial sale in a particular country or the date on which the last valid claim of the applicable BioDelivery patents in a particular country has expired or been invalidated or found unenforceable.

NOTE 7. LICENSE AND COLLABORATION AGREEMENTS

We have entered into certain license, collaboration and discovery agreements with third parties for the development of pain management and other products. These agreements require us to share in the development costs of such products and grant marketing rights to us for such products.

We have also licensed from universities, corporations and other similar institutions, rights to certain technologies or intellectual property, generally in the field of pain management. We are generally required to make upfront payments as well as other payments upon successful completion of regulatory or sales milestones. In addition, these agreements generally require us to pay royalties on sales of the products arising from these agreements. These agreements generally permit Endo to terminate the agreement with no significant continuing obligation.

For additional discussion of our material license and collaboration agreements at December 31, 2012, refer to our Annual Report on Form 10-K for the year ended December 31, 2012, filed with the Securities and Exchange Commission on March 1, 2013.

Commercial Products

Novartis AG and Novartis Consumer Health, Inc.

On March 4, 2008, we entered into a License and Supply Agreement (the Voltaren^® Gel Agreement) with and among Novartis AG and Novartis Consumer Health, Inc. (Novartis) to obtain the exclusive U.S. marketing rights for the prescription medicine Voltaren^® Gel (Voltaren^® Gel or the Licensed Product). Voltaren^® Gel received regulatory approval in October 2007 from the U.S. Food and Drug Administration (FDA), becoming the first topical prescription treatment for use in treating pain associated with osteoarthritis and the first new product approved in the U.S. for osteoarthritis since 2001. Voltaren^® Gel was granted marketing exclusivity in the U.S. as a prescription medicine until October 2010.

Under the terms of the five-year Voltaren^® Gel Agreement, Endo made an upfront cash payment of $85 million. Endo agreed to pay royalties to Novartis on annual Net Sales of the Licensed Product, subject to certain thresholds as defined in the Voltaren^® Gel Agreement. In addition, Endo agreed to make certain guaranteed minimum annual royalty payments of $30 million per year payable in the 4th and 5th year of the Voltaren^® Gel Agreement, which may be reduced under certain circumstances, including Novartis’s failure to supply the Licensed Product, subject to certain limitations including the launch of a generic to the Licensed Product in the U.S. These guaranteed minimum royalties will be creditable against royalty payments on an annual basis such that Endo’s obligation with respect to each year is to pay the greater of (i) royalties payable based on annual net sales of the Licensed Product or (ii) the guaranteed minimum royalty for such Voltaren^® Gel Agreement year. Novartis is also eligible to receive a one-time milestone payment of $25 million if annual net sales of Voltaren^® Gel exceed $300 million in the U.S. To date, annual net sales have not exceeded this threshold and, therefore, this milestone payment has not been paid.

The $85 million upfront payment and the present value of the guaranteed minimum royalties was initially capitalized as an intangible asset in the amount of $129 million, representing the fair value of the exclusive license to market Voltaren^® Gel over the initial contract term. We are amortizing this intangible asset into Cost of revenues over an estimated five-year useful life. Due to Novartis’s failure to supply Voltaren^® Gel during the first quarter of 2012 resulting from the shutdown of its Lincoln, Nebraska manufacturing facility, we were not obligated to make any first quarter royalty payment, including the $7.5 million minimum royalty. Accordingly, during the first quarter of 2012, we recorded a reduction to the associated liability and a decrease in the intangible asset. Subsequent to the first quarter, royalties in the amount of $21.6 million were incurred in 2012 representing either a percentage of actual net sales of Voltaren^® Gel or minimum royalties pursuant to the Voltaren^® Gel Agreement. Voltaren^® Gel royalties incurred during the three months ended March 31, 2013 were $7.5 million, representing minimum royalties pursuant to the Voltaren^® Gel Agreement.

Endo is solely responsible to commercialize the Licensed Product during the term of the Voltaren^® Gel Agreement. With respect to each year during the term of the Voltaren^® Gel Agreement, subject to certain limitations, Endo is required to incur a minimum amount of annual advertising and promotional expenses (A&P Expenditures) on the commercialization of the Licensed Product, which may be reduced under certain circumstances including Novartis’s failure to supply the Licensed Product. In addition, Endo is required to perform a minimum number of face-to-face one-on-one discussions with physicians and other healthcare practitioners (Details) for the purpose of promoting the Licensed Product within its approved indication during each year of the Voltaren^® Gel Agreement which may be reduced under certain circumstances including Novartis’s failure to supply the Licensed Product. Further, during the term of the Voltaren^® Gel Agreement, Endo will share in the costs of certain clinical studies and development activities initiated at the request of the FDA or as considered appropriate by Novartis and Endo. On December 31, 2012, Endo and Novartis entered into an amendment to the Voltaren^® Gel Agreement (the Voltaren^® Gel Amendment) which reduced the minimum number of Details required to be conducted by Endo and the minimum amount of annual advertising and promotional expenses required to be spent by Endo on the commercialization of Voltaren^® Gel during each remaining year of the Voltaren^® Gel Agreement.

During the fourth Voltaren^® Gel Agreement Year beginning on July 1, 2011 and extending through June 30, 2012, we agreed to spend 13% of prior year sales or approximately $16 million on A&P Expenditures. During the fifth Voltaren^® Gel Agreement Year beginning on July 1, 2012 and extending through June 30, 2013, we agreed to spend approximately $4.5 million on A&P Expenditures. In subsequent Agreement Years, the minimum A&P Expenditures set forth in the Voltaren^® Gel Agreement are determined based on a percentage of net sales of Voltaren^® Gel, which may be reduced under certain circumstances, including Novartis’s failure to supply Voltaren^® Gel.

Amounts incurred by Endo for such A&P Expenditures were $2.1 million and $3.6 million for the three months ended March 31, 2013 and 2012, respectively.

During the term of the Voltaren^® Gel Agreement, Endo has agreed to purchase all of its requirements for the Licensed Product from Novartis. The price was fixed for the first year and subject to annual changes based upon changes in the producer price index and raw materials. The Voltaren^® Gel Amendment reduced the supply price of Voltaren^® Gel otherwise payable under the Agreement.

Novartis has the exclusive right, at its sole discretion, to effect a switch of the Licensed Product from a prescription product to an over-the-counter (OTC) product in the U.S. (an OTC Switch) by filing an amendment or supplement to the Licensed Product New Drug Application or taking any other action necessary or advisable in connection therewith to effect the OTC Switch, and thereafter to commercialize such OTC product. Notwithstanding the foregoing, Novartis shall not launch an OTC equivalent product prior to a time specified in the Voltaren^® Gel Agreement, and Novartis shall not take any action that results in the loss of the prescription product status for the Licensed Product prior to such time. Novartis is obligated to notify Endo if it submits a filing to the FDA in respect of an OTC equivalent product. In the event that Novartis gains approval of an OTC equivalent product that results in the Licensed Product being declassified as a prescription product, then Novartis will make certain royalty payments to Endo on net sales of such OTC equivalent product in the U.S. by Novartis, its affiliates and their respective licensees or sublicensees as set forth in the Voltaren^® Gel Agreement. As a condition to the payment of any and all such royalties, net sales of the Licensed Product in the U.S. must have exceeded a certain threshold prior to the launch of the OTC equivalent product by Novartis or its affiliates.

The initial term of the Voltaren^® Gel Agreement will expire on June 30, 2013, and we have the option to extend it for three successive one year terms. In December 2012, pursuant to the provisions of the Voltaren^® Gel Agreement, the term was automatically renewed for an additional one year period. As a result, we capitalized, as an intangible asset, $21.3 million, representing the present value of the guaranteed minimum royalties we expect to pay to Novartis AG over the renewal term. The Voltaren^® Gel Agreement will remain in place unless either (i) Endo provides written notice of non-renewal to the other party at least six months prior to the expiration of any renewal term after the first renewal term, (ii) Novartis provides written notice of non-renewal to the other party at least six months prior to the expiration of any renewal term after the second renewal term or (iii) the Voltaren^® Gel Agreement is otherwise terminated in accordance with its terms. Upon extension, Endo is again obligated to make certain guaranteed minimum annual royalty payments of $30 million per year during each successive one-year renewal term, subject to certain limitations including the launch of a generic to the Licensed Product in the U.S. These guaranteed minimum annual royalty payments may be reduced under certain circumstances, including Novartis’s failure to supply the Licensed Product. These guaranteed minimum royalties will be creditable against royalty payments on an annual basis such that Endo’s obligation with respect to each year is to pay the greater of (i) royalties payable based on annual net sales of the Licensed Product or (ii) the guaranteed minimum royalty for such Voltaren^® Gel Agreement year.

Among other standard and customary termination rights granted under the Voltaren^® Gel Agreement, the Voltaren^® Gel Agreement can be terminated by either party upon reasonable written notice and if either party has committed a material breach that has not been remedied within 90 days from the giving of written notice. Endo may terminate the Voltaren^® Gel Agreement by written notice upon the occurrence of several events, including the launch in the U.S. of a generic to the Licensed Product. Novartis may terminate the Voltaren^® Gel Agreement upon reasonable written notice (1) if Endo fails to deliver a set percentage of the minimum Details in a certain six-month period under the Voltaren^® Gel Agreement; or (2) on or after the launch in the U.S. of an OTC equivalent product by Novartis, its affiliates or any third party that does not result in the declassification of the Licensed Product as a prescription product, following which net sales in a six-month period under the Voltaren^® Gel Agreement are less than a certain defined dollar amount.

Products in Development

BayerSchering

In July 2005, Indevus (now, Endo Pharmaceuticals Solutions Inc.) licensed exclusive U.S. rights from Schering AG, Germany, now BayerSchering Pharma AG (BayerSchering) to market a long-acting injectable testosterone preparation for the treatment of male hypogonadism that we refer to as Aveed^TM(the BayerSchering Agreement). The Company is responsible for the development and commercialization of Aveed^TMin the U.S. BayerSchering is responsible for manufacturing and supplying the Company with finished product. As part of the BayerSchering Agreement, Indevus agreed to pay to BayerSchering up to $30.0 million in up-front, regulatory milestone, and commercialization milestone payments, including a $5.0 million payment due upon approval by the FDA to market Aveed^TM. Indevus also agreed to pay to BayerSchering 25% of net sales of Aveed^TMto cover both the cost of finished product and royalties.

In October 2006, Indevus entered into a supply agreement with BayerSchering pursuant to which BayerSchering agreed to manufacture and supply Indevus with all of its requirements for Aveed^TMfor a supply price based on net sales of Aveed^TM. The supply price is applied against the 25% of net sales owed to BayerSchering pursuant to the BayerSchering Agreement. The BayerSchering Agreement expires 10 years after the first commercial sale of Aveed^TM. Either party may also terminate the BayerSchering Agreement in the event of a material breach by the other party.

BioDelivery Sciences International, Inc.

In January 2012, the Company signed a worldwide license and development agreement (the BioDelivery Agreement) with BioDelivery Sciences International, Inc. (BioDelivery) for the exclusive rights to develop and commercialize BEMA^® Buprenorphine. BEMA^® Buprenorphine is a transmucosal form of buprenorphine, a partial mu-opiate receptor agonist, which incorporates a bioerodible mucoadhesive (BEMA^®) technology. BEMA^® Buprenorphine is currently in Phase III trials for the treatment of moderate to severe chronic pain. The Company made an upfront payment to BioDelivery for $30.0 million, which was expensed as Research and development in the first quarter of 2012. During the first quarter of 2012, $15.0 million of additional costs were incurred related to the achievement of certain regulatory milestones and were recorded as Research and development expense. We paid this amount in the second quarter of 2012. In the future, Endo could be obligated to pay royalties based on net sales of BEMA^® Buprenorphine and commercial and regulatory milestone payments of up to approximately $135.0 million. Endo may terminate the BioDelivery Agreement at any time upon six months written notice. Unless terminated earlier, the BioDelivery Agreement shall expire, on a country-by-country basis, upon the later to occur of 10 years from the date of first commercial sale in a particular country or the date on which the last valid claim of the applicable BioDelivery patents in a particular country has expired or been invalidated or found unenforceable.