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Expired Canadian patentCanada

Method for preparing polymer maleimides

CA 2614987 C · Owner: Nektar Therapeutics Al, Corporation · Inventors: Odom, Ryan; Sander, Tony L.; Schaefer, Anthony G.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Methods for preparing polymeric reagents bearing a maleimide are provided. Also provided are compositions , comprising the polymeric reagents and conjugates prepared by polymeric , reagents obtained by the described methods.

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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 July 19, 2006 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 19, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 19, 2006
GrantedOctober 8, 2013
Term endedJuly 19, 2026
Patent numberCA 2614987 C
Classification (IPC)C08G65/32

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedJuly 19, 2006Patent grantedOct 8, 2013Term endedJuly 19, 2026

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.