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Expired Canadian patentCanada

Hydrophobic nucleic acid probe

CA 2019939 C · Owner: Bayer Corporation · Inventors: Urdea, Michael S.; Horn, Thomas

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A polynucleotide which has been modified by a hydrophobic moiety so that the polynucleotide attaches to a substrate by the hydrophobic moiety rather than by, a portion of the polynucleotide thereby allowing the, polynucleotide to be available for hybridization.

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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 June 27, 1990 and granted May 23, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 27, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 27, 1990
GrantedMay 23, 2000
Term endedJune 27, 2010
Patent numberCA 2019939 C
Classification (IPC)C07H21/00 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 27, 1990Patent grantedMay 23, 2000Term endedJune 27, 2010

Sources & verification

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