Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations

Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations · Cooperative Patent Classification (CPC)

Computing, optics, measurement, and control technologies.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeG07D7/005
Official titleTesting security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
Display labelTesting security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
Total patents97

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
20157
20168
20177
201810
201913
202014
20218
20228
20237
20243
202510
20262

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 G07D7/005?
CPC G07D7/005 is the Cooperative Patent Classification code for “Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations.”
How many patents are filed under CPC G07D7/005 (Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations)?
Our database includes 97 publications tagged with this CPC code.
Is patent activity under CPC G07D7/005 growing?
Publication counts under this code: 3 in 2024 vs 10 in 2025 (latest complete years).