The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 27, 2026
Filed:
Jun. 24, 2024
Nanhu Laboratory, Jiaxing, CN;
Lei Zhang, Jiaxing, CN;
Nanhu Laboratory, Jiaxing, CN;
Abstract
A trademark anti-counterfeiting method based on cryptography is provided, where a trademark owner prints an anti-counterfeiting code associated with a trademark image through a specific method. A verifier executes following verification process: collecting a trademark image by using a photosensitive device; measuring K feature points of collected trademark image to obtain N groups of color values; calculating M_i' and a hash value MH_i′ of M_i′; using the photosensitive device to read N MH_i values, MH and MH signature values of anti-counterfeiting code, and using a public key to verify validity of MH signature value; if the MH signature value is valid, performing fusion operation on N MH_i values, determining whether result of fusion operation is MH, if so, determining that N MH_i values are valid; comparing MH_i′ with MH_i one by one, and if the comparison is successful, the verification is successful, otherwise the verification fails.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile