Commitments and Contingencies	6 Months Ended
Jun. 30, 2018
Commitments and Contingencies
Commitments and Contingencies	12. Commitments and Contingencies License Agreement with Chimerix, Inc. On December 17, 2014, the Company entered into an exclusive license agreement with Chimerix pursuant to which the Company has licensed TXL™ from Chimerix for further clinical development and commercialization. TXL™ is a highly potent analog of the antiviral drug tenofovir DF (Viread®). Under the terms of the agreement, ContraVir licensed TXL™ from Chimerix in exchange for an upfront payment consisting of 120,000 shares of ContraVir Series B Convertible Preferred Stock. In addition, Chimerix is eligible to receive up to approximately $20.0 million in clinical, regulatory and initial commercial milestone payments in the United States and Europe, as well as royalties and additional milestone payments based on commercial sales in those territories. Either party may terminate the License Agreement upon the occurrence of a material breach by the other party (subject to standard cure periods), or upon certain events involving the bankruptcy or insolvency of the other party. The Company may also terminate the License Agreement without cause on a country by country basis upon sixty days’ prior written notice to Chimerix. The fair value of the Preferred B shares exchanged for the license was determined to be equal to the amount paid per share of the Series A, as the provision of the Preferred B shares were the same as the Preferred A Shares, based on an arm’s length transaction. Therefore, the fair value of the Preferred B shares issued was $10.00 per share or $1.2 million. The cost of the license was classified as a research and development expense in the amount of $1.2 million as the compound is early stage, has not yet reached technological feasibility and has no alternative use. As of the date of this report, no amounts had been accrued related to the milestone payments Chimerix is eligible to receive. License Agreement with University College Cardiff Consultants Limited (“Cardiff”) On June 10, 2013, the Company and Synergy Pharmaceuticals, Inc. the former parent of the Company, entered into a Contribution Agreement, as amended and restated on August 5, 2013, or the Contribution Agreement, to transfer to the Company the VALNIVUDINE assets, in exchange for the issuance to Synergy of 1,125,000 shares of the Company’s common stock representing 100% of the outstanding shares of the Company’s common stock as of immediately following such issuance. Pursuant to the Contribution Agreement, Synergy transferred ownership of all intellectual property rights acquired from Bristol-Myers Squibb (“BMS”) including all historical research, clinical study protocols, data, results and patents related to the VALNIVUDINE assets as well as assumed the obligations of Synergy, including all liabilities of Synergy, under the asset purchase agreement, dated August 17, 2012, by and between Synergy and BMS, or the BMS Agreement. The VALNIVUDINE assets acquired from BMS are licensed from Cardiff pursuant to the terms of that certain Patent and Technology License Agreement, dated as of February 2, 2005, between Cardiff and CRI, an entity with no prior relationship with us, as amended March 27, 2007, or the Cardiff Agreement. The Cardiff Agreement shall remain in full force and effect until the date upon which the last of the last patent or the last continuation or extension to any patents within the Patent Rights (as defined in the Cardiff Agreement) expires. Any milestone and/or royalty payment under the Cardiff Agreement shall be payable for as long as the Cardiff Agreement is in effect. The Cardiff Agreement may be terminated in its entirety, for among other reasons and in the following manner as set forth below: (a) automatically by Cardiff, if we become bankrupt or insolvent and/or if our business shall be placed in the hands of a receiver, assignee, or trustee; (b) upon ninety (90) calendar days written notice from Cardiff, if we breach or default (i) on the payment or report obligations or use of name obligations or (ii) on any other obligation under the Cardiff Agreement, subject to a ninety (90) calendar-day cure period; (c) if we have defaulted or been in excess of one (1) month late on its payment obligations pursuant to the terms of the Cardiff Agreement on any two (2) occasions in a twelve (12) month period, subject to a cure period; (d) upon one hundred twenty (120) calendar days written notice from us if any particular patent or patents included in Patent Rights and which account for at least thirty (30%) percent of the total royalty to Cardiff, is or are irrevocably adjudicated to be invalid; or (e) upon ninety (90) calendar days written notice from us if Cardiff is in breach of Section 11.1 (Confidential Information and Publication) unless, before the end of the such ninety (90) calendar-day notice period, Cardiff has cured the default or breach to our reasonable satisfaction and so notifies us, stating the manner of the cure. The terms of the Cardiff Agreement provided in consideration for a license of all of Cardiff’s rights in any technical information, know-how, processes, procedures, compositions, devices, methods, formulae, protocols, techniques related to the VALNIVUDINE Assets, or the Patent Rights. The Cardiff Agreement provided for an initial base payment of $270,000, which has previously been paid by CRI, subsequent milestone payments covering (i) initiation of a clinical trial at each phase, (ii) marketing (FDA) approval and (iii) on achieving the milestone of aggregate net sales in three different tiers, as well as a low single digit royalty based on net sales. The terms of the BMS Agreement provided for an initial base payment of $1 million, subsequent milestone payments of $3 million and $6 million, respectively, covering (i) marketing (FDA) approval and (ii) on achieving the milestone of aggregate net sales equal to or greater than $125 million, as well as a single digit royalty based on net sales. The total aggregate amount of milestone payments that could be payable to BMS under the BMS Agreement is equal to $9 million. The duration of any milestone payment obligation owed to BMS shall continue until the earliest of (i) payment, in full, of all milestone payments as required under the BMS Agreement, (ii) our determination using commercially reasonable standards consistent with the exercise of prudent scientific and business judgment and consistent with those standards used by us for its other therapeutic products at a similar stage of development and with similar commercial potential, to terminate the development of the VALNIVUDINE assets, and (iii) the tenth (10th) anniversary of the date of the BMS Agreement, The duration of any royalty payment obligation to BMS shall commence on the date of the first commercial sale of the VALNIVUDINE assets in a country until the expiration of any claim of an issued and unexpired patent which has not been held permanently revoked, unenforceable or invalid by a decision of a court or other governmental agency of competent jurisdiction of any of our patents or any other patent covering the use or sale of the VALNIVUDINE assets in such country. The transactions contemplated by the BMS Agreement closed on August 17, 2012 and neither party can terminate the remaining obligations owed under the BMS Agreement. No milestone payments have been made under this agreement and as of the date of this report, no amounts had been accrued related to the remaining milestone payments BMS is eligible to receive.

12. Commitments and Contingencies

License Agreement with Chimerix, Inc.

On December 17, 2014, the Company entered into an exclusive license agreement with Chimerix pursuant to which the Company has licensed TXL™ from Chimerix for further clinical development and commercialization. TXL™ is a highly potent analog of the antiviral drug tenofovir DF (Viread®). Under the terms of the agreement, ContraVir licensed TXL™ from Chimerix in exchange for an upfront payment consisting of 120,000 shares of ContraVir Series B Convertible Preferred Stock. In addition, Chimerix is eligible to receive up to approximately $20.0 million in clinical, regulatory and initial commercial milestone payments in the United States and Europe, as well as royalties and additional milestone payments based on commercial sales in those territories. Either party may terminate the License Agreement upon the occurrence of a material breach by the other party (subject to standard cure periods), or upon certain events involving the bankruptcy or insolvency of the other party. The Company may also terminate the License Agreement without cause on a country by country basis upon sixty days’ prior written notice to Chimerix.

The fair value of the Preferred B shares exchanged for the license was determined to be equal to the amount paid per share of the Series A, as the provision of the Preferred B shares were the same as the Preferred A Shares, based on an arm’s length transaction. Therefore, the fair value of the Preferred B shares issued was $10.00 per share or $1.2 million. The cost of the license was classified as a research and development expense in the amount of $1.2 million as the compound is early stage, has not yet reached technological feasibility and has no alternative use. As of the date of this report, no amounts had been accrued related to the milestone payments Chimerix is eligible to receive.

License Agreement with University College Cardiff Consultants Limited (“Cardiff”)

On June 10, 2013, the Company and Synergy Pharmaceuticals, Inc. the former parent of the Company, entered into a Contribution Agreement, as amended and restated on August 5, 2013, or the Contribution Agreement, to transfer to the Company the VALNIVUDINE assets, in exchange for the issuance to Synergy of 1,125,000 shares of the Company’s common stock representing 100% of the outstanding shares of the Company’s common stock as of immediately following such issuance. Pursuant to the Contribution Agreement, Synergy transferred ownership of all intellectual property rights acquired from Bristol-Myers Squibb (“BMS”) including all historical research, clinical study protocols, data, results and patents related to the VALNIVUDINE assets as well as assumed the obligations of Synergy, including all liabilities of Synergy, under the asset purchase agreement, dated August 17, 2012, by and between Synergy and BMS, or the BMS Agreement.

The VALNIVUDINE assets acquired from BMS are licensed from Cardiff pursuant to the terms of that certain Patent and Technology License Agreement, dated as of February 2, 2005, between Cardiff and CRI, an entity with no prior relationship with us, as amended March 27, 2007, or the Cardiff Agreement.

The Cardiff Agreement shall remain in full force and effect until the date upon which the last of the last patent or the last continuation or extension to any patents within the Patent Rights (as defined in the Cardiff Agreement) expires. Any milestone and/or royalty payment under the Cardiff Agreement shall be payable for as long as the Cardiff Agreement is in effect. The Cardiff Agreement may be terminated in its entirety, for among other reasons and in the following manner as set forth below: (a) automatically by Cardiff, if we become bankrupt or insolvent and/or if our business shall be placed in the hands of a receiver, assignee, or trustee; (b) upon ninety (90) calendar days written notice from Cardiff, if we breach or default (i) on the payment or report obligations or use of name obligations or (ii) on any other obligation under the Cardiff Agreement, subject to a ninety (90) calendar-day cure period; (c) if we have defaulted or been in excess of one (1) month late on its payment obligations pursuant to the terms of the Cardiff Agreement on any two (2) occasions in a twelve (12) month period, subject to a cure period; (d) upon one hundred twenty (120) calendar days written notice from us if any particular patent or patents included in Patent Rights and which account for at least thirty (30%) percent of the total royalty to Cardiff, is or are irrevocably adjudicated to be invalid; or (e) upon ninety (90) calendar days written notice from us if Cardiff is in breach of Section 11.1 (Confidential Information and Publication) unless, before the end of the such ninety (90) calendar-day notice period, Cardiff has cured the default or breach to our reasonable satisfaction and so notifies us, stating the manner of the cure.

The terms of the Cardiff Agreement provided in consideration for a license of all of Cardiff’s rights in any technical information, know-how, processes, procedures, compositions, devices, methods, formulae, protocols, techniques related to the VALNIVUDINE Assets, or the Patent Rights. The Cardiff Agreement provided for an initial base payment of $270,000, which has previously been paid by CRI, subsequent milestone payments covering (i) initiation of a clinical trial at each phase, (ii) marketing (FDA) approval and (iii) on achieving the milestone of aggregate net sales in three different tiers, as well as a low single digit royalty based on net sales.

The terms of the BMS Agreement provided for an initial base payment of $1 million, subsequent milestone payments of $3 million and $6 million, respectively, covering (i) marketing (FDA) approval and (ii) on achieving the milestone of aggregate net sales equal to or greater than $125 million, as well as a single digit royalty based on net sales. The total aggregate amount of milestone payments that could be payable to BMS under the BMS Agreement is equal to $9 million. The duration of any milestone payment obligation owed to BMS shall continue until the earliest of (i) payment, in full, of all milestone payments as required under the BMS Agreement, (ii) our determination using commercially reasonable standards consistent with the exercise of prudent scientific and business judgment and consistent with those standards used by us for its other therapeutic products at a similar stage of development and with similar commercial potential, to terminate the development of the VALNIVUDINE assets, and (iii) the tenth (10th) anniversary of the date of the BMS Agreement, The duration of any royalty payment obligation to BMS shall commence on the date of the first commercial sale of the VALNIVUDINE assets in a country until the expiration of any claim of an issued and unexpired patent which has not been held permanently revoked, unenforceable or invalid by a decision of a court or other governmental agency of competent jurisdiction of any of our patents or any other patent covering the use or sale of the VALNIVUDINE assets in such country. The transactions contemplated by the BMS Agreement closed on August 17, 2012 and neither party can terminate the remaining obligations owed under the BMS Agreement. No milestone payments have been made under this agreement and as of the date of this report, no amounts had been accrued related to the remaining milestone payments BMS is eligible to receive.