Polymer-lipid Nanocomplex for Enhanced Hydrophobic Drug Solubility

ChangeBridge: EPO Bulletin - Therapeutics (A61P)

Published March 25th, 2026

Detected April 1st, 2026

Summary

The European Patent Office published patent application EP3941439A1 for the Council for Scientific and Industrial Research covering a polymer-lipid nanocomplex formulation that enhances aqueous solubilisation and absorption of hydrophobic active compounds. The invention addresses drug delivery challenges for poorly soluble pharmaceuticals across multiple therapeutic areas including anti-obesity, anxiolytic, antidepressant, anti-inflammatory, antimicrobial, and antiparasitic applications.

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What changed

EPO published patent application EP3941439A1 on March 25, 2026, granting the Council for Scientific and Industrial Research protection for a polymer-lipid nanocomplex technology that improves solubility and absorption of hydrophobic drugs. The designated states cover major European markets including DE, FR, GB, IT, ES, NL, BE, CH, and others. The patent claims formulations using specific lipid components and polymer matrices for drug delivery applications.

Patent publication does not create compliance obligations. Entities developing competing formulations for hydrophobic drug delivery should conduct freedom-to-operate analysis. The 20-year patent term from priority date will provide market exclusivity. No action required unless the entity's R&D involves similar polymer-lipid nanocomplex technologies.

Source document (simplified)

← EPO Patent Bulletin

POLYMER-LIPID NANOCOMPLEX FOR ENHANCED AQUEOUS SOLUBILISATION AND ABSORPTION OF HYDROPHOBIC ACTIVE COMPOUNDS

Publication EP3941439A1 Kind: A1 Mar 25, 2026

Applicants

Council for Scientific and Industrial Research

Inventors

NKUNA, Tshepo Patric, KALOMBO, Michel Lonji

IPC Classifications

A61K 9/107 20060101AFI20201120BHEP A61K 9/51 20060101ALI20201120BHEP A61K 9/19 20060101ALI20201120BHEP A61K 47/02 20060101ALI20201120BHEP A61K 47/08 20060101ALI20201120BHEP A61K 47/10 20170101ALI20201120BHEP A61K 47/12 20060101ALI20201120BHEP A61K 47/26 20060101ALI20201120BHEP A61K 47/32 20060101ALI20201120BHEP A61K 47/34 20170101ALI20201120BHEP A61K 31/05 20060101ALI20201120BHEP A61K 31/137 20060101ALI20201120BHEP A61K 31/496 20060101ALI20201120BHEP A61P 3/04 20060101ALI20201120BHEP A61P 25/22 20060101ALI20201120BHEP A61P 25/24 20060101ALI20201120BHEP A61P 29/00 20060101ALI20201120BHEP A61P 31/06 20060101ALI20201120BHEP A61P 31/10 20060101ALI20201120BHEP A61P 31/12 20060101ALI20201120BHEP A61P 33/06 20060101ALI20201120BHEP

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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