Protein c derivatives
CA 2096604 C · Owner: Grinnell, Brian W. · Inventors: Gerlitz, Bruce E.; Grinnell, Brian W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Human protein C derivatives with high activity and reduced dependence on thrombin activation are described. These derivatives differ from the native forms of human protein C in their increased activation rates functional activities and carbohydrate structures. DNA compounds, transfer vectors, expression vectors and transformants useful in producing these derivatives are also described.
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 May 19, 1993 and granted December 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2015.
- 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.