Company: KROS
Filing Date: 2025-02-26
Form Type: 10-K
Source: 0001664710-25-000018
Chunk: 132

Company: Keros Therapeutics, Inc.
Filing Date: 2025-02-26
Form: 10-K
Item: Item 1
Chunk 132
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 entered any national jurisdictions. Our policy is to file patent applications to protect technology, inventions and improvements to inventions that may be commercially important to the development of our business.

We seek U.S. and international patent protection for a variety of technologies, and own patent applications with claims directed to ActRIIA ligand traps, ActRIIB ligand traps, ActRII chimera ligand traps, GDNF fusion polypeptides, ALK2 antibodies, crystal forms of an ALK2 inhibitor, and uses thereof. We also intend to seek patent protection or rely upon trade secret rights to protect other technologies that may be used to discover and validate targets, and that may be used to manufacture and develop novel products. We are a party to license agreements that give us rights to use specific technologies in our product candidates and in manufacturing our product candidates. 

Patent applications directed to our most advanced programs are summarized below. 

Cibotercept 

Cibotercept is a modified ActRIIB ligand trap that is designed to bind to different TGF-ß ligands that signal through a TGF-ß signaling pathway. We own one issued U.S. patent, 14 pending U.S. patent applications, two issued ex-U.S. patents and 29 pending ex-U.S. applications that contain claims or supporting disclosure directed to ActRIIB ligand traps and use thereof to treat muscle disease, bone disease, anemia, fibrosis, pulmonary hypertension, metabolic disease, thrombocytopenia, and neutropenia, among others. Any patents issuing from these applications will have expiration dates between January 11, 2039 and February 27, 2045, absent any patent term adjustments or extensions.

KER-065

KER-065 is a ligand trap comprised of a modified ligand-binding domain derived from ActRIIA and ActRIIB that is designed to bind to different TGF-ß ligands that signal through a TGF-ß signaling pathway. We own 15 pending U.S. patent applications and 27 pending ex-U.S. applications that contain claims or supporting disclosure directed to ligand traps comprised of a modified ligand-binding domain derived from ActRIIA and ActRIIB and use thereof to treat muscle disease, bone disease, anemia, fibrosis, pulmonary hypertension, metabolic disease, thrombocytopenia, and neutropenia, among others. Any patents issuing from these applications will have expiration dates between March 19, 2041 and February 27, 2045