A61K 47/51 the non-active ingredient being a modifying agent
Full Title
Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient > the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates > the non-active ingredient being a modifying agent
Filing statistics
CPC A61K 47/51 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 47/52 the modifying agent being an inorganic compound, e.g. an inorganic ion that is complexed with the active ingredient
- A61K 47/54 the modifying agent being an organic compound
- A61K 47/56 the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule
- A61K 47/62 the modifying agent being a protein, peptide or polyamino acid
- A61K 47/68 the modifying agent being an antibody, an immunoglobulin or a fragment thereof, e.g. an Fc-fragment
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