On June 30, 2021, VYNE Therapeutics Inc. received a paragraph IV certification notice from Perrigo Israel Pharmaceuticals Ltd. advising that Perrigo has submitted to the U.S. Food and Drug Administration (the “FDA”) an Abbreviated New Drug Application (“ANDA”) seeking approval to manufacture and sell a generic version of the Company’s product AMZEEQ® (minocycline) topical foam, 4% in the United States prior to the expiration of the Company’s U.S. patents Nos. 8,865,139, 8,945,516, 8,992,896, 9675,700, 10,086,080, 10,137,200, 10,213,512, 10,265,404, 10,398,641, 10,517,882, 10,821,187, and 10,849,847 (the “Challenged Patents”), which are listed in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations, otherwise known as the “Orange Book.” The Notice alleges that the Challenged Patents are invalid, unenforceable, and/or will not be infringed by the commercial manufacture, use or sale of the generic product described in Perrigo’s ANDA. The Company is currently reviewing the Notice and intends to vigorously defend and enforce its intellectual property rights protecting AMZEEQ, as needed.