CPC Subgroup
C12Y 301/01 Carboxylic ester hydrolases (3.1.1)
Full Title
Hydrolases acting on ester bonds (3.1) > Carboxylic ester hydrolases (3.1.1)
Filing statistics
CPC C12Y 301/01 belongs to the parent subclass C12Y, which recorded 144,590 patent applications worldwide between 2013 and 2023. Annual filings grew from 9,773 in 2013 to 11,938 in 2023 (+22%), peaking at 15,970 applications in 2021. The most active applicants in class C12 are HARVARD UNIVERSITY (8,321 applications), CHINESE ACADEMY OF SCIENCES (7,486 applications) and UNIVERSITY OF CALIFORNIA (7,320 applications).
Source: EPO PATSTAT, worldwide filings
88 direct subcodes
Child Classifications
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- C12Y 301/01001 Carboxylesterase (3.1.1.1)
- C12Y 301/01002 Arylesterase (3.1.1.2)
- C12Y 301/01003 Triacylglycerol lipase (3.1.1.3)
- C12Y 301/01004 Phospholipase A2 (3.1.1.4)
- C12Y 301/01005 Lysophospholipase (3.1.1.5)
- C12Y 301/01006 Acetylesterase (3.1.1.6)
- C12Y 301/01007 Acetylcholinesterase (3.1.1.7)
- C12Y 301/01008 Cholinesterase (3.1.1.8), i.e. butyrylcholine-esterase
- C12Y 301/0101 Tropinesterase (3.1.1.10)
- C12Y 301/01011 Pectinesterase (3.1.1.11)
- C12Y 301/01013 Sterol esterase (3.1.1.13)
- C12Y 301/01014 Chlorophyllase (3.1.1.14)
- C12Y 301/01015 L-Arabinonolactonase (3.1.1.15)
- C12Y 301/01016 4-Carboxymethyl-4-hydroxyisocrotonolactonase (3.1.1.16) (C12Y301/01024, C12Y503/03004 take precedence)
- C12Y 301/01017 Gluconolactonase (3.1.1.17)
- C12Y 301/01019 Uronolactonase (3.1.1.19)
- C12Y 301/0102 Tannase (3.1.1.20)
- C12Y 301/01021 Retinyl-palmitate esterase (3.1.1.21) (C12Y301/01001, C12Y301/01003 take precedence)
- C12Y 301/01022 Hydroxybutyrate-dimer hydrolase (3.1.1.22)
- C12Y 301/01023 Acylglycerol lipase (3.1.1.23)
Top Applicants
Top 10 applicants by patent filingsfor class C12, 2013–2023, worldwide · Source: EPO PATSTAT
- HARVARD UNIVERSITY US 8,321
- CHINESE ACADEMY OF SCIENCES 7,486
- UNIVERSITY OF CALIFORNIA US 7,320
- REGENERON PHARMACEUTICALS US 5,003
- INSERM (INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE) FR 4,292
- UNIVERSITY OF PENNSYLVANIA US 4,213
- CNRS (CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE) FR 4,113
- JIANGNAN UNIVERSITY 3,961
- ROCHE CH 3,792
- ILLUMINA US 3,692