Single-chain bifunctional glycoprotein hormones
CA 2308571 C · Owner: Ben-Menahem, David · Inventors: Boime, Irving; Ben-Menahem, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Single-chain agonists and/or antagonists of the glycoprotein hormones are disclosed. These proteins are of the formulae: (1) .beta.1-(linker1)m-.alpha.- (linker2)n-.beta.2; or (2) .beta.1-(linker1)m-.beta.2-(linker2)n-.alpha.; or (3) .alpha.-(linker1)m-.beta.1-(linker2)n-.beta.2 wherein each of .beta.1 and , .beta.2 has the amino acid sequence of the .beta. subunit of a vertebrate glycoprotein hormone or a variant thereof; ".alpha." designates the .alpha. subunit of a vertebrate glycoprotein hormone or a variant thereof; "linker" refers to a covalently linked moiety that the spaces .beta.1 and .beta.2 subunits at distances from the .alpha. subunit and from each other effective to …
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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 November 9, 1998 and granted April 23, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2020.
- 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.