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Expired Canadian patentCanada

Prolactin receptor gene as a genetic marker for increased litter size in pigs

CA 2261158 C · Owner: Iowa State University Research Foundation, Inc. · Inventors: Rothschild, Max F.; Vincent, Amy L.; Tuggle, Christopher K.

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Abstract From the Canadian patent

Disclosed herein are genetic markers for pig litter size methods for , identifying such markers and methods of screening pigs to determine those more likely to produce larger litters and preferably selecting those pigs for future breeding purposes. The markers are based upon the presence or absence of certain polymorphisms in the pig prolactin receptor gene coding region.

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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 30, 1997 and granted August 9, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 30, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2019.
  • 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 30, 1997
GrantedAugust 9, 2011
Term endedJune 30, 2017
Patent numberCA 2261158 C
Classification (IPC)C12N15/16 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedJune 30, 1997Patent grantedAug 9, 2011Term endedJune 30, 2017

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