Polyalkylene glycol with moiety for conjugating biologically active compounds
CA 2840490 C · Owner: Biogen Ma Inc. · Inventors: Lin, Kochung; Petter, Russell C.; Pepinsky, R. Blake
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The biological activity of biologically active compounds and reduction of toxicity is addressed by the conjugation of a biologically active compound with an activated polyalkylene glycol having a moiety which covalently bonds to the compound. A pharmaceutical composition containing the polyalkylene glycol conjugate and a carrier and a method of treating a patient by the administration of a composition with the polyalkylene glycol conjugate are 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 January 17, 2003 and granted February 28, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 2025.
- 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.