CPC Subgroup
C12Y 503/99 Other intramolecular oxidoreductases (5.3.99)
Full Title
Intramolecular oxidoreductases (5.3) > Other intramolecular oxidoreductases (5.3.99)
Filing statistics
CPC C12Y 503/99 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
9 direct subcodes
Child Classifications
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- C12Y 503/99002 Prostaglandin-D synthase (5.3.99.2)
- C12Y 503/99003 Prostaglandin-E synthase (5.3.99.3)
- C12Y 503/99004 Prostaglandin-I synthase (5.3.99.4)
- C12Y 503/99005 Thromboxane-A synthase (5.3.99.5)
- C12Y 503/99006 Allene-oxide cyclase (5.3.99.6)
- C12Y 503/99007 Styrene-oxide isomerase (5.3.99.7)
- C12Y 503/99008 Capsanthin/capsorubin synthase (5.3.99.8)
- C12Y 503/99009 Neoxanthin synthase (5.3.99.9)
- C12Y 503/9901 Thiazole tautomerase (5.3.99.10)
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