Recurium IP Holdings WEE1 Inhibitor Patent
Summary
The USPTO granted Patent US12606567B2 to Recurium IP Holdings, LLC on April 21, 2026, covering salts and forms of WEE1 inhibitor Compound A, including adipate salt Form A. The patent discloses pharmaceutical applications for treating diseases characterized by excessive cellular proliferation, including breast cancer. The patent contains 23 claims under CPC classifications C07D 487/04 and C07B 2200/13.
What changed
The USPTO issued Patent US12606567B2 granting Recurium IP Holdings, LLC exclusive rights to salt forms (including adipate salt Form A) and freebase forms of WEE1 inhibitor Compound A. The patent protects pharmaceutical compositions and methods of treating conditions characterized by excessive cellular proliferation, including breast cancer.
For pharmaceutical companies developing WEE1 inhibitors or related oncology therapeutics, this patent may represent a blocking patent in the WEE1 inhibitor space. Competitors should evaluate freedom-to-operate positions and consider potential licensing discussions. The patent does not impose compliance obligations but creates enforceable IP rights effective from the April 21, 2026 grant date.
Archived snapshot
Apr 21, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Salts and forms of a WEE1 inhibitor
Grant US12606567B2 Kind: B2 Apr 21, 2026
Assignee
Recurium IP Holdings, LLC
Inventors
Chad Daniel Hopkins, Peter Qinhua Huang, Kevin Duane Bunker
Abstract
The salt, such as adipate salt Form A, and freebase forms of Compound A are WEE1 inhibitors. Such salts and/or forms and freebase forms, as well as pharmaceutically acceptable salts and compositions thereof, are useful for treating diseases or conditions, including conditions characterized by excessive cellular proliferation, such as breast cancer.
CPC Classifications
C07D 487/04 C07B 2200/13
Filing Date
2021-07-08
Application No.
18004628
Claims
23
Parties
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