A61K 9/127 Synthetic bilayered vehicles, e.g. liposomes or liposomes with cholesterol as the only non-phosphatidyl surfactant
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
Filing statistics
CPC A61K 9/127 belongs to the parent subclass A61K, which recorded 1,717,491 patent applications worldwide between 2013 and 2023. Annual filings grew from 114,681 in 2013 to 125,843 in 2023 (+10%), peaking at 182,901 applications in 2016. The most active applicants in class A61 are PHILIPS ELECTRONICS (20,621 applications), NOVARTIS (15,792 applications) and ROCHE (14,303 applications).
Source: EPO PATSTAT, worldwide filings
5 direct subcodes
Child Classifications
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- A61K 9/1271 Non-conventional liposomes, e.g. PEGylated liposomes or liposomes coated or grafted with polymers (liposomes as conjugates )
- A61K 9/1274 Non-vesicle bilayer structures, e.g. liquid crystals, tubules, cubic phases or cochleates; Sponge phases
- A61K 9/1275 Lipoproteins or protein-free species thereof, e.g. chylomicrons; Artificial high-density lipoproteins [HDL], low-density lipoproteins [LDL] or very-low-density lipoproteins [VLDL]; Precursors thereof
- A61K 9/1276 Globules of milk; Constituents thereof
- A61K 9/1277 Preparation processes; Proliposomes
Top Applicants
Top 10 applicants by patent filingsfor class A61, 2013–2023, worldwide · Source: EPO PATSTAT
- PHILIPS ELECTRONICS NL 20,621
- NOVARTIS CH 15,792
- ROCHE CH 14,303
- COVIDIEN US 13,862
- HARVARD UNIVERSITY US 13,454
- UNIVERSITY OF CALIFORNIA US 12,798
- P&G (PROCTER & GAMBLE COMPANY) US 12,140
- L'OREAL FR 11,800
- OLYMPUS CORPORATION JP 9,894
- BOSTON SCIENTIFIC SCIMED US 9,513