In December 2020, the Company entered into a sublease agreement for office space in Waltham, Massachusetts (the “Waltham Sublease”). The Waltham Sublease commenced on December 21, 2020 and expires on November 30, 2023. In addition to rent of approximately $15,000 per month, the Waltham Sublease requires the Company to pay certain taxes, insurance and operating costs relating to the leased premises (collectively, “Lease Operating Costs”). The Waltham Sublease contains customary default provisions, representations, warranties and covenants. The Waltham Sublease is classified as an operating lease. The Company recognizes the Waltham Sublease expense in the condensed consolidated statements of operations and records a lease liability and right-of-use asset for this lease. The option to extend the Waltham Sublease was not recognized as part of the Company’s lease liabilities and right-of-use lease assets.

Future minimum lease payments, excluding Lease Operating Costs, as of March 31, 2022 are as follows (in thousands):

2022	$	136
2023		166
Thereafter		-
Total future minimum lease payments		302
Less: discount		(26	)
Total lease liabilities	$	276

Lease expense under current and former leases was approximately $45,000 and $0.1 million for the three months ended March 31, 2022 and 2021, respectively. Cash paid for amounts included in the measurement of lease liabilities was $45,000 and $50,000 for the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022, the weighted-average remaining lease term and the weighted-average discount rate for the Company’s only operating lease, the Waltham Sublease, was 1.7 years and 3.3%, respectively.

On February 15, 2022, the Company received a paragraph IV notice of certification (the “Notice Letter”) from Gland Pharma Limited (“Gland”) advising that Gland had submitted an Abbreviated New Drug Application (“ANDA”) to the FDA seeking approval to manufacture, use or sell a generic version of GIAPREZA^® in the U.S. prior to the expiration of U.S. Patent Nos.: 9,220,745; 9,572,856; 9,867,863; 10,028,995; 10,335,451; 10,493,124; 10,500,247; 10,548,943; 11,096,983; and 11,219,662 (the “GIAPREZA Patents”), which are listed in the FDA’s Approved Drug Products with Therapeutic Equivalence Evaluations (the “Orange Book”). The Notice Letter alleges that the GIAPREZA Patents are invalid, unenforceable and/or will not be infringed by the commercial manufacture, use or sale of the generic product described in Gland’s ANDA.

On March 29, 2022, the Company filed a complaint for patent infringement of the GIAPREZA Patents against Gland and certain related entities in the United States District Court for the District of New Jersey in response to Gland’s ANDA filing. In accordance with the Hatch-Waxman Act, because GIAPREZA is a new chemical entity and the Company filed a complaint for patent infringement within 45 days of receipt of the Notice Letter, the FDA cannot approve Gland’s ANDA any earlier than 7.5 years from the approval of the GIAPREZA NDA unless the District Court finds that all of the asserted claims of the patents-in-suit are invalid, unenforceable and/or not infringed. The Company intends to vigorously enforce its intellectual property rights relating to GIAPREZA.