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Commitments and Contingencies | 3 Months Ended
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Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | Commitments and contingencies ANDA Litigation - Perrigo 4mg On September 14, 2018, Adapt Pharma Inc., Adapt Pharma Operations Limited and Adapt Pharma Ltd. (collectively, "Adapt Pharma"), and Opiant Pharmaceuticals, Inc. ("Opiant"), received notice from Perrigo UK FINCO Limited Partnership ("Perrigo"), that Perrigo had filed an Abbreviated New Drug Application ("ANDA"), with the United States Food and Drug Administration seeking regulatory approval to market a generic version of NARCAN®(naloxone hydrochloride) Nasal Spray 4mg/spray before the expiration of U.S. Patent Nos. 9,211,253, (the "‘253 Patent"), 9,468,747 (the "‘747 Patent"), 9,561,177, (the "‘177 Patent"), 9,629,965, (the "‘965 Patent") and 9,775,838 (the "‘838 Patent"). On or about October 25, 2018, Perrigo sent a subsequent notice letter relating to U.S. Patent No. 10,085,937 (the "937 Patent"). Perrigo’s notice letters assert that its generic product will not infringe any valid and enforceable claim of these patents. On October 25, 2018, Emergent BioSolutions’ Adapt Pharma subsidiaries and Opiant, (collectively, the "Plaintiffs"), filed a complaint for patent infringement of the ‘253, ‘747, ‘177, ‘965, and the ‘838 Patents against Perrigo in the United States District Court for the District of New Jersey arising from Perrigo’s ANDA filing with the FDA. Plaintiffs filed a second complaint against Perrigo on December 7, 2018, for the infringement of the ‘937 Patent. On February 12, 2020, Adapt Pharma and Perrigo entered into a settlement agreement to resolve the ongoing litigation. Under the terms of the settlement, Perrigo has received a non-exclusive license under Adapt Pharma's patents to make, have made and market its generic naloxone hydrochloride nasal spray under its own ANDA. Perrigo’s license will be effective as of January 5, 2033 or earlier under certain circumstances including circumstances related to the outcome of the current litigation against Teva (as defined below) or litigation against future ANDA filers. The Perrigo settlement agreement is subject to review by the U.S. Department of Justice and the Federal Trade Commission, and entry of an order dismissing the litigation by the U.S. District Court for the District of New Jersey. ANDA Litigation - Teva 2mg On or about February 27, 2018, Adapt Pharma Inc. and Adapt Pharma Operations Limited and Opiant received notice from Teva Pharmaceuticals Industries Ltd. and Teva Pharmaceuticals USA, Inc. (collectively "Teva"), that Teva had filed an ANDA with the FDA seeking regulatory approval to market a generic version of NARCAN® (naloxone hydrochloride) Nasal Spray 2 mg/spray before the expiration of U.S. Patent No. 9,480,644, (the "‘644 Patent"), and U.S. Patent No. 9,707,226, (the "'226 Patent"). Teva's notice letter asserts that the commercial manufacture, use or sale of its generic drug product described in its ANDA will not infringe the '644 Patent or the '226 Patent, or that the '644 Patent and '226 Patent are invalid or unenforceable. Adapt Pharma Inc. and Adapt Pharma Operations Limited and Opiant filed a complaint for patent infringement against Teva in the United States District Court for the District of New Jersey. ANDA Litigation - Teva 4mg On or about September 13, 2016, Adapt Pharma Inc. and Adapt Pharma Operations Limited and Opiant received notice from Teva that Teva had filed an ANDA with the FDA seeking regulatory approval to market a generic version of NARCAN® (naloxone hydrochloride) Nasal Spray 4 mg/spray before the expiration of U.S. Patent No. 9,211,253 (the "'253 Patent"). Adapt Pharma Inc. and Adapt Pharma Operations Limited and Opiant received additional notices from Teva relating to the '747, the '177, the '965, the '838, and the ‘937 Patents. Teva's notice letters assert that the commercial manufacture, use or sale of its generic drug product described in its ANDA will not infringe the '253, the '747, the '177, the '965, the '838, or the ‘937 Patent, or that the '253, the '747, the '177, the '965, the '838, and the ‘937 Patents are invalid or unenforceable. Adapt Pharma Inc. and Adapt Pharma Operations Limited and Opiant filed a complaint for patent infringement against Teva in the United States District Court for the District of New Jersey with respect to the '253 Patent. Adapt Pharma Inc. and Adapt Pharma Operations Limited and Opiant also filed complaints for patent infringement against Teva in the United States District Court for the District of New Jersey with respect to the '747, the '177, the '965, and the '838 Patents. All five proceedings have been consolidated. As of the date of this filing, Adapt Pharma Inc., Adapt Pharma Operations Limited, and Opiant, have not filed a complaint related to the ‘937 Patent. Closing arguments took place on February 26, 2020. In the complaints described in the paragraphs above, the Plaintiffs seek, among other relief, orders that the effective date of FDA approvals of the Teva ANDA products and the Perrigo ANDA product be a date not earlier than the expiration of the patents listed for each product, equitable relief enjoining Teva and Perrigo from making, using, offering to sell, selling, or importing the products that are the subject of Teva and Perrigo’s respective ANDAs, until after the expiration of the patents listed for each product, and monetary relief or other relief as deemed just and proper by the court. Nalox-1 Pharmaceuticals, a non-practicing entity, filed petitions with the United States Patent and Trademark Office Patent Trial and Appeal Board (the "PTAB") requesting inter parties review ("IPR") of five of the six patents listed in the Orange Book related to NARCAN® Nasal Spray 4mg/spray. In a series of decisions, the PTAB agreed to institute a review of the '253 Patent, the '747 Patent and the '965 Patent but denied review of the '177 Patent and the '838 Patent. Nalox-1 did not request review of the '937 Patent.

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