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IPC Subgroup
A61K 9/1271

Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers

Introduced: January 2025

Full Title

Medicinal preparations characterised by special physical form > Dispersions; Emulsions > Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant > Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers

Classification Context

Section:
HUMAN NECESSITIES
Class:
MEDICAL OR VETERINARY SCIENCE; HYGIENE
Subclass:
PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES

2 direct subcodes

Child Classifications

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  • A61K 9/1272 comprising non-phosphatidyl surfactants as bilayer-forming substances, e.g. cationic lipids or non-phosphatidyl liposomes coated or grafted with polymers
  • A61K 9/1273 Polymersomes; Liposomes with polymerisable or polymerised bilayer-forming substances

Top Applicants

Top 10 applicants by patent filingsfor class A61, 2013–2023, worldwide · Source: EPO PATSTAT

  1. PHILIPS ELECTRONICS NL 18,523
  2. NOVARTIS CH 14,253
  3. COVIDIEN US 13,953
  4. ROCHE CH 12,005
  5. CHINESE ACADEMY OF SCIENCES 11,955
  6. UNIVERSITY OF CALIFORNIA US 11,692
  7. HARVARD UNIVERSITY US 11,596
  8. L'OREAL FR 11,593
  9. P&G (PROCTER & GAMBLE COMPANY) US 11,297
  10. OLYMPUS CORPORATION JP 9,594