Expired Canadian patentCanada
Novel peptides, their preparation and use
CA 2111083 C · Owner: Schmidt, Ulrich · Inventors: Riedl, Bernd; Schmidt, Ulrich; Griesser, Helmut
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described are peptides of formula (I), in which R1 R2, R3, R4, R5, X1 and X2 , are as defined in the description as well, as their preparation. The new peptides are suitable for use in the treatment of illnesses.
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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 June 17, 1992 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 17, 1992
GrantedAugust 19, 2003
Term endedJune 17, 2012
Patent numberCA 2111083 C
Classification (IPC)C07K7/54 +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.