Kumquat Biosciences EP4203952A1 Heterocyclic Compounds Patent
Summary
Kumquat Biosciences Inc. has obtained European patent publication EP4203952A1 for heterocyclic compounds and uses thereof, covering compositions with potential therapeutic applications. The patent names five inventors — Liu Yi, Ren Pingda, Li Liansheng, Zhu Zhimin, and Zhu Xiuwen — and was published on April 15, 2026. The application is designated across 31 European states including Germany, France, the United Kingdom, Italy, Spain, and the Netherlands, among others.
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GovPing monitors EPO Patent Bulletin - Organic Chemistry (C07D) for new healthcare & life sciences regulatory changes. Every update since tracking began is archived, classified, and available as free RSS or email alerts — 22 changes logged to date.
What changed
The European Patent Office published EP4203952A1, a European patent application by Kumquat Biosciences Inc. covering heterocyclic compounds and their uses, with an April 15, 2026 publication date. The patent names five individual inventors and carries multiple IPC classifications relating to heterocyclic chemistry and pharmaceutical compositions.
Pharmaceutical and biotechnology companies developing compounds in the C07D chemical space should assess freedom-to-operate implications of EP4203952A1 in designated states. The designated states span 31 European jurisdictions, and the patent's broad C07D 401/14, 403/14, and 417/14 classification coverage may indicate claims across multiple heterocyclic compound families.
Archived snapshot
Apr 22, 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.
HETEROCYCLIC COMPOUNDS AND USES THEREOF
Publication EP4203952A1 Kind: A1 Apr 15, 2026
Applicants
Kumquat Biosciences Inc.
Inventors
LIU, Yi, REN, Pingda, LI, Liansheng, ZHU, Zhimin, ZHU, Xiuwen
IPC Classifications
A61K 31/4375 20060101AFI20241107BHEP C07D 401/14 20060101ALI20241107BHEP C07D 403/14 20060101ALI20241107BHEP C07D 417/14 20060101ALI20241107BHEP
Designated States
AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LI, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR
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