U.S. Patent 10735464 was awarded to Alibaba Group Holding Limited on August 04, 2020 and is entitled “System and method for detecting replay attack.” The first named inventor is Guilu Xie of Hangzhou, . The abstract contains an overview of the patent disclosure:

A computer-implemented method for detecting replay attack comprises: obtaining at least one candidate transaction for adding to a blockchain; verifying if an identification of the candidate transaction exists in an identification database, the identification database comprising a plurality of identifications within a validation range; and in response to determining that the identification does not exist in the identification database, determining that the candidate transaction is not associated with a replay attack. Link to Full Patent

This blockchain patent was originally filed on December 17, 2019  as U.S. Patent Application 16/717081 at the United Stated Patent and Trademark Office. The application was them awarded a patent grant and published as U.S. Patent 10735464. The assistant examiner was Thomas Ho.

Alibaba Group Holding Limited, who is the original assignee of this patent, has at least 1834 total granted patents in the United States as of the date of this article. This blockchain patent has been cited 0 times by other U.S. patents according to our law firm research, and can be considered an innovative patent in the field of cryptocurrency and blockchain.

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