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Functionalized Peptides As Antiviral Agents - EP4051265

The patent EP4051265 was granted to Enanta Pharmaceuticals on Aug 20, 2025. The application was originally filed on Jul 19, 2021 under application number EP21846991A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP4051265

ENANTA PHARMACEUTICALS
Application Number
EP21846991A
Filing Date
Jul 19, 2021
Status
Granted And Under Opposition
Jul 18, 2025
Publication Date
Aug 20, 2025
External Links
Slate, Register, Google Patents

Patent Summary

Patent Family

Patent Family

Patent Citations (15) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONUS5508269
DESCRIPTIONUS5767068
DESCRIPTIONWO2005113580
DESCRIPTIONWO2006061714
DESCRIPTIONWO2018023054
DESCRIPTIONWO2018042343
DESCRIPTIONWO9843650
EXAMINATIONWO0208244
INTERNATIONAL-SEARCH-REPORTUS2006014821
INTERNATIONAL-SEARCH-REPORTWO2005113580
INTERNATIONAL-SEARCH-REPORTWO2018042343
SEARCHWO2018042343
SEARCHWO2021226546
SEARCHWO2021250648
SEARCHWO2021252644

Non-Patent Literature (NPL) Citations (9) New

NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.

Citation PhaseReference Text
DESCRIPTION- "Organic Solvents Physical Properties and Methods of Purification", Techniques of Chemistry Series, John Wiley & Sons, (19860000), vol. II
DESCRIPTION- "Prodrugs, Topical and Ocular Drug Delivery", KENNETH B. SLOAN, Drugs and the Pharmaceutical Sciences, Marcel Dekker, Inc., (19920000), vol. 53
DESCRIPTION- S. M. BERGE et al., "pharmaceutically acceptable salts", J. Pharmaceutical Sciences, (19770000), vol. 66, pages 2 - 19
EXAMINATION- Chuck Chi-Pang ET AL, "Design, synthesis and crystallographic analysis of nitrile-based broad-spectrum peptidomimetic inhibitors for coronavirus 3C-like proteases", European journal of medicinal chemistry, AMSTERDAM, NL, (20130101), vol. 59, doi:10.1016/j.ejmech.2012.10.053, ISSN 0223-5234, pages 1 - 6, XP055826852
SEARCH[ ] - Anonymous, "Nirmatrelvir", Cortellis Database, (20221108), URL: https://www.cortellis.com/drugdiscovery/entity/drug/1126756/product?ent=qR5ruNw5&updateHistoryPage=5&orderBy=_score:desc, XP055980610 [ ] * the whole document *
SEARCH- Anonymous, "Pfizer Initiates Phase 1 Study of Novel Oral Antiviral Therapeutic Agent Against SARS-CoV-2 Science Products Stories Newsroom About", (20210323), URL: https://www.pfizer.com/news/press-release/press-release-detail/pfizer-initiates-phase-1-study-novel-oral-antiviral, (20221111), XP055980606 [PX] 1-6,10-12 * the whole document * [I] 7-9
SEARCH- OWEN D, "Oral inhibitors of the SARS-CoV-2 main protease for the treatment of COVID-19", 261ST AM CHEM SOC (ACS) NATL MEET, (20210416), XP055980609 [PX] 1-6,10-12 * the whole document * [I] 7-9
SEARCH- WANG YAXIN ET AL, "Inhibition of enterovirus 71 replication by an [alpha]-hydroxy-nitrile derivative NK-1.9k", ANTIVIRAL RESEARCH, ELSEVIER BV, NL, (20170105), vol. 141, doi:10.1016/J.ANTIVIRAL.2017.01.002, ISSN 0166-3542, pages 91 - 100, XP029949620 [Y] 1-6,10-12 * whole document, in particuler fig. 1a and table 1; compound 1 (nitrile) *
SEARCH[ ] - CHIA C. S. BRIAN ET AL, "Novel Coronavirus Main Protease Di- and Tripeptide Inhibitors for Treating COVID-19", US, vol. 13, no. 9, doi:10.1021/acsmedchemlett.2c00332, ISSN 1948-5875, (20220808), pages 1388 - 1389, ACS MEDICINAL CHEMISTRY LETTERS, URL: https://pubs.acs.org/doi/pdf/10.1021/acsmedchemlett.2c00332, XP055981438 [ ] * the whole document *

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