Stem cell inhibiting proteins
CA 2125985 C · Owner: British Bio-Technology Limited · Inventors: Craig, Stewart; Czaplewski, Lloyd G.; Edwards, Richard M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Proteinaceous molecules with stem cell inhibition activity are analogues of LD78, or MIP-1.alpha. which have mutations to prevent or reduce multimer formation beyond, certain stages (for example a dodecamer). Aggregate formation is therefore inhibited, and the resulting low molecular weight monomers (or oligomers) have improved solution properties leading to enhanced productivity and greater therapeutic utility as stem cell protective agents which are useful in tumour, 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 December 23, 1992 and granted April 17, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 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.
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.