Patent ID: 9467427
Filing Date: 2016-10-11
CPC Classification: G06F,H04L

Claim Text:
1. A system for deauthorizing use of a product on an end user device, comprising: a licensing authority computing device including a licensing authority processor and a memory including instructions operable to be executed by the licensing authority processor to perform a set of actions, the licensing authority processor receiving from the end user device a proof of removal code, the proof of removal code including an encrypted first character string encrypted by the end user device using an encryption key specific to the product being deauthorized, the licensing authority processor decrypting the encrypted first character string of the proof of removal code using decryption key associated with program code of the product to produce a second character string, the licensing authority processor communicating deauthorization acknowledgement of the product to the end user device when the first character string matches the second character string.