Changeflow GovPing Pharma & Drug Safety Siglec-15 Binding Protein Patent Application
Routine Notice Added Final

Siglec-15 Binding Protein Patent Application

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Published March 25th, 2026
Detected April 2nd, 2026
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Summary

The European Patent Office published application EP4299591A1 for a Siglec-15 binding protein filed by Shanghai Jemincare Pharmaceuticals Co., Ltd. and Jiangxi Jemincare Group Co., Ltd. The invention relates to therapeutic binding proteins for cancer treatment (A61P 35/00), with applications in oncology and immunotherapy. Designated states cover all EPC contracting states including major European markets.

What changed

EPO published patent application EP4299591A1 titled 'Preparation of Siglec-15 Binding Protein and Use Thereof' filed by Shanghai Jemincare Pharmaceuticals. The application covers C07K 16/28 (antibodies), C12N 15/13 (gene sequences), and therapeutic use for cancer treatment (A61P 35/00). The inventors include YANG, Xinxiu, GU, Chunyin, WANG, Zongda, and others. Designated states include all major EPC contracting states (DE, FR, GB, IT, ES, NL, etc.).

This is a routine patent publication providing public notice of the application. No compliance actions are required from regulated entities. Pharmaceutical companies developing similar therapeutics or biosimilars should review the claims to assess freedom-to-operate. Healthcare providers and investors monitoring oncology pipeline developments may wish to track this application through prosecution to grant.

Source document (simplified)

← EPO Patent Bulletin

PREPARATION OF SIGLEC-15 BINDING PROTEIN AND USE THEREOF

Publication EP4299591A1 Kind: A1 Mar 25, 2026

Applicants

Shanghai Jemincare Pharmaceuticals Co., Ltd., Jiangxi Jemincare Group Co., Ltd.

Inventors

YANG, Xinxiu, GU, Chunyin, WANG, Zongda, CAO, Xiaodan, LIU, Xiaowu, LIU, Peipei, YANG, Lu, DENG, Sujun, PAN, Zhongzong, WANG, Xueping

IPC Classifications

C07K 16/28 20060101AFI20250206BHEP C12N 15/13 20060101ALI20250206BHEP A61K 39/395 20060101ALI20250206BHEP A61P 35/00 20060101ALI20250206BHEP

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

View original document →

Named provisions

Preparation of Siglec-15 Binding Protein and Use Thereof IPC C07K 16/28 - Antibodies IPC C12N 15/13 - Gene sequences IPC A61K 39/395 - Therapeutic compositions IPC A61P 35/00 - Anticancer agents

Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
EPO
Published
March 25th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Minor
Document ID
EP4299591A1

Who this affects

Applies to
Pharmaceutical companies Patients Healthcare providers
Industry sector
3254 Pharmaceutical Manufacturing 3254.1 Biotechnology 6211 Healthcare Providers
Activity scope
Biopharmaceutical Patent Filing Therapeutic Protein Development Oncology Drug Development
Geographic scope
European Union EU

Taxonomy

Primary area
Intellectual Property
Operational domain
Legal
Compliance frameworks
GxP
Topics
Pharmaceuticals Healthcare

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