IL-2 Compositions by Proviva Therapeutics, published Apr 15
Summary
The European Patent Office published patent application EP3976638A1 titled "IL-2 Compositions and Methods of Use Thereof" for Proviva Therapeutics (Hong Kong) Limited. The invention covers IL-2 (interleukin-2) compositions for therapeutic use, with inventor Zijuan Li listed. The patent is classified under IPC categories C07K 14/55, C07K 14/715, C07K 16/24, A61K 47/64, and A61K 47/68. Designated states cover all 31 EEA countries plus the UK and Switzerland.
About this source
GovPing monitors EPO Patent Bulletin - Peptides (C07K) 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 EPO published patent application EP3976638A1 for IL-2 compositions and their therapeutic methods, filed by Proviva Therapeutics (Hong Kong) Limited. The invention relates to interleukin-2 (IL-2) compositions classified across multiple IPC subclasses including C07K peptide classifications and A61K pharmaceutical formulations. Designated states include all 31 European Patent Convention contracting states plus Switzerland and the United Kingdom.
For biopharmaceutical companies and researchers in the IL-2/immunotherapy space, this patent establishes IP protection for Proviva's compositions. Competitors developing similar IL-2 formulations should conduct freedom-to-operate analyses. Investors tracking Proviva Therapeutics should note this strategic IP filing in the immunotherapy domain.
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.
IL-2 COMPOSITIONS AND METHODS OF USE THEREOF
Publication EP3976638A1 Kind: A1 Apr 15, 2026
Applicants
Proviva Therapeutics (Hong Kong) Limited
Inventors
LI, Zijuan
IPC Classifications
C07K 14/55 20060101AFI20230719BHEP C07K 14/715 20060101ALI20230719BHEP C07K 16/24 20060101ALI20230719BHEP A61K 47/64 20170101ALI20230719BHEP A61K 47/68 20170101ALI20230719BHEP
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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