Proteinases {, e.g. Endopeptidases (3.4.21-3.4.25)}

Proteinases {, e.g. Endopeptidases (3.4.21-3.4.25)} · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC12N9/50
Official titleProteinases {, e.g. Endopeptidases (3.4.21-3.4.25)}
Display labelProteinases {, e.g. Endopeptidases (3.4.21-3.4.25)}
Total patents525

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201531
201635
201739
201849
201964
202053
202156
202238
202356
202450
202537
202617

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C12N9/50?
CPC C12N9/50 is the Cooperative Patent Classification code for “Proteinases {, e.g. Endopeptidases (3.4.21-3.4.25)}.”
How many patents are filed under CPC C12N9/50 (Proteinases {, e.g. Endopeptidases (3.4.21-3.4.25)})?
Our database includes 525 publications tagged with this CPC code.
Is patent activity under CPC C12N9/50 growing?
Publication counts under this code: 50 in 2024 vs 37 in 2025 (latest complete years).