Fumaric acid amides
CA 2425599 C · Owner: Fumapharm Ag · Inventors: Joshi, Rajendra Kumar; Strebel, Hans-Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the use of fumaric acid amides of the general for-, mula (I), ( see formula I) , wherein R1 represents OR3 or a D- or L-amino acid radical -NH-CHR4-COOH bonded via an amide bond, wherein R3 is hydrogen, a straight-chained or branched optionally , substituted C1-24 alkyl radical a phenyl radical or C6- 10 aralkyl radical and R4 is a , side chain of a natural or synthetic amino acid and R2 represents a D- or L-amino acid radical -NH-CHR5-COOH bonded via an amide bond or a peptide radical comprising 2 to 100 amino acids bonded via an amide bond, wherein R5 is a side chain of a natural or synthetic amino acid for preparing a drug, (1) for the therapy of an …
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 January 8, 2002 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 8, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 8, 2024.
- 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.