Polycyclic Carbamoylpyridone Derivatives for Treatment of HIV, Shionogi, EP4257137A2
Summary
The European Patent Office published Shionogi & Co., Ltd.'s European patent application EP4257137A2, covering polycyclic carbamoylpyridone derivatives for the treatment of HIV. The application names Yoshiyuki Taoda and Yuto Unoh as inventors and was published on April 15, 2026. The application designates all 39 EPC contracting states including 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, and TR.
About this source
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 — 63 changes logged to date.
What changed
The EPO published European patent application EP4257137A2 filed by Shionogi & Co., Ltd. covering polycyclic carbamoylpyridone derivatives as HIV therapeutics. The application was published under the A2 procedure (with supplementary European search report) and includes IPC classifications spanning C07D 471/14 through C07D 498/22, as well as pharmaceutical use classifications under A61P 31/18 and A61K 31 series.
For pharmaceutical companies and researchers in the antiviral drug development space, this publication establishes a priority date and disclosed technical information that may affect freedom-to-operate assessments for competing compounds in the polycyclic carbamoylpyridone chemical space. Competitors should review the claims scope upon grant to evaluate potential licensing or design-around implications.
Archived snapshot
Apr 25, 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.
POLYCYCLIC CARBAMOYLPYRIDONE DERIVATIVES FOR THE TREATMENT OF HIV
Publication EP4257137A2 Kind: A2 Apr 15, 2026
Applicants
Shionogi & Co., Ltd
Inventors
TAODA, Yoshiyuki, UNOH, Yuto
IPC Classifications
C07D 471/14 20060101AFI20230922BHEP C07D 471/18 20060101ALI20230922BHEP C07D 471/20 20060101ALI20230922BHEP C07D 471/22 20060101ALI20230922BHEP C07D 491/22 20060101ALI20230922BHEP C07D 498/14 20060101ALI20230922BHEP C07D 498/22 20060101ALI20230922BHEP A61P 31/18 20060101ALI20230922BHEP A61K 31/53 20060101ALI20230922BHEP A61K 31/5383 20060101ALI20230922BHEP A61K 31/55 20060101ALI20230922BHEP
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
Parties
Related changes
Get daily alerts for EPO Patent Bulletin - Organic Chemistry (C07D)
Daily digest delivered to your inbox.
Free. Unsubscribe anytime.
Source
About this page
Every important government, regulator, and court update from around the world. One place. Real-time. Free. Our mission
Source document text, dates, docket IDs, and authority are extracted directly from EPO.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
Classification
Who this affects
Taxonomy
Browse Categories
Get alerts for this source
We'll email you when EPO Patent Bulletin - Organic Chemistry (C07D) publishes new changes.
Subscribed!
Optional. Filters your digest to exactly the updates that matter to you.