On March 1, 2019, a complaint for patent infringement was filed in United States District Court for the District of Delaware against Chemo Research, S.L., Insud Pharma S.L., IntelGenx Corp., and IntelGenx Technologies Corp. (collectively, the "Defendants") by BioDelivery Sciences International, Inc., and Arius Two, Inc., (collectively, the "Plaintiffs"), asserting that the Defendants infringed upon BioDelivery Sciences International, Inc. Orange Book listed patents for BELBUCA, including United States Patent Nos. 8,147,866 and 9,655,843, both expiring in July of 2027, and United States Patent No. 9,901,539 expiring December of 2032. See BioDelivery Sciences International, Inc. et al v. Chemo Research, S.L. et al, No. 1:19-cv-00444-CFC-CJB (D. Del.). Plaintiffs seek to enjoin Defendants from commercially manufacturing, using, offering for sale, or selling Defendants' generic buprenorphine buccal film within the United States, or importing Defendants' generic buprenorphine buccal film into the United States, until the expiration of U.S. Patent Nos. 8,147,866, 9,655,843, and 9,901,539. Plaintiffs are not seeking damages. Discovery is ongoing. A trial addressing patent validity is scheduled to begin on or after September 21, 2020. A trial addressing infringement is scheduled to begin on or after February 1, 2021. We believe that we will ultimately be successful in our defense of these matters.
This complaint followed the receipt by BioDelivery Sciences International, Inc. of a notice letter by Chemo Research S.L. on January 31, 2019, stating that it had filed with the FDA an ANDA containing a Paragraph IV Patent Certification, for a generic version of BELBUA Buccal Film in strengths 75 mcg, 150 mcg, 300 mcg, 450 mcg, and 900 mcg. Since the Plaintiffs initiated a patent infringement suit to defend the patents identified in the notice letter within 45 days after receipt, the FDA is prevented from approving the ANDA until the earlier of (i) 30 months or (ii) a decision which determines whether the patents were infringed or invalid.
On March 15, 2019, Plaintiffs filed their same complaint for patent infringement in the United States District Court for the District of New Jersey. See BioDelivery Sciences International, Inc. et al v. Chemo Research, S.L. et al, No. 2:19-cv-08660-KM-MAH (D.N.J.). Plaintiffs voluntarily dismissed their New Jersey case on April 25, 2019.