Expired Canadian patentCanada
Nodulisporic acid derivatives
CA 2215982 C · Owner: Merck Sharp & Dohme Corp. · Inventors: Shih, Thomas; Fisher, Michael H.; Meinke, Peter T.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel nodulisporic acid derivatives which , are acaricidal, antiparasitic, insecticidal and anthelmintic agents.
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 March 15, 1996 and granted June 12, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 15, 1996
GrantedJune 12, 2001
Term endedMarch 15, 2016
Patent numberCA 2215982 C
Classification (IPC)C07D491/16 +2 more
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.