Expired Canadian patentCanada
5-methyl-isoxazole-4-carboxylic acid anilides and 2-hydroxyethylidene-cyano acetic acid anilides for the treatment of ocular diseases
CA 2023560 C · Owner: Alcon Laboratories, Inc. · Inventors: Smith Lang, Laura; Robertson, Stella M.
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 use of 5-methyl-isoxazole-4-carboxylic acid anilides and 2-hydroxyethylidene-cyano acetic acid anilides for treating ocular diseases with immune etiology is disclosed.
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 August 17, 1990 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 17, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 17, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 17, 1990
GrantedDecember 12, 2000
Term endedAugust 17, 2010
Patent numberCA 2023560 C
Classification (IPC)A61K31/42 +1 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.