Expired Canadian patentCanada
Phorbine derivatives and their use in the diagnosis and therapy of cancer
CA 2172607 C · Owner: Maziere, Jean-Claude · Inventors: Dagan, Arie; Santus, Rene; Chapman, J. Donald
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Phorbine derivatives having high potency and light absorptivity in the 650 to 780 nanometer range are useful in cancer diagnosis and therapy, especially photodynamic therapy.
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 September 15, 1994 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 15, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 15, 1994
GrantedDecember 14, 1999
Term endedSeptember 15, 2014
Patent numberCA 2172607 C
Classification (IPC)C07D487/22 +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.