Legend Biotech CD33 Single-Domain Antibodies EP3850011A1
Summary
The European Patent Office published patent application EP3850011A1 for single-domain antibodies targeting CD33, filed by Legend Biotech Ireland Limited and Legend Biotech USA Inc. The application covers antibodies for potential therapeutic use in cancer treatment, with six named inventors: ZHANG Yafeng, ZHAN Tailan, SUN Fei, LIU Jian, ZHANG Qing, and WU Shu. The patent is classified under IPC categories A61K, A61P, and C07K.
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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 — 46 changes logged to date.
What changed
The EPO published patent application EP3850011A1, a single-domain antibody construct targeting CD33 filed by Legend Biotech Ireland Limited and Legend Biotech USA Inc. The application covers therapeutic uses for cancer treatment as indicated by IPC classifications A61K 39/395 and A61P 35/00.
Pharmaceutical and biotechnology companies developing CD33-targeted therapies or related immunological constructs should review this publication for potential freedom-to-operate implications. The patent designates 27 European Patent Convention member states, creating IP protection scope across major European markets.
Archived snapshot
Apr 24, 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.
SINGLE-DOMAIN ANTIBODIES AGAINST CD33 AND CONSTRUCTS THEREOF
Publication EP3850011A1 Kind: A1 Apr 15, 2026
Applicants
Legend Biotech Ireland Limited, Legend Biotech USA Inc.
Inventors
ZHANG, Yafeng, ZHAN, Tailan, SUN, Fei, LIU, Jian, ZHANG, Qing, WU, Shu
IPC Classifications
A61K 39/395 20060101AFI20220912BHEP A61P 35/00 20060101ALI20220912BHEP C07K 16/28 20060101ALI20220912BHEP C07K 19/00 20060101ALI20220912BHEP
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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Source
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