Emulation repair system
CA 2244892 C · Owner: Symantec Corporation · Inventors: Nachenberg, Carey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An emulation repair system (200) restores virus-infected computer files (220) to their uninfected states without risk of infecting the rest of the computer system (202), by providing a virtual machine (216) for emulating the virusinfected computer file (220), a foundation module (240) including generic machine language repair routines (242) and a virus specific overlay module , (262). Emulation repair system (200) receives the identity of the infected computer file (220) and the infecting virus (224) from a virus scanning module, and uses the received information to access a virus definition (232) that includes decryption information on the identified virus (224). The infected …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 3, 1997 and granted May 21, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 3, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.