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Expired Canadian patentCanada

Microrna molecules

CA 2937159 C · Owner: Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. · Inventors: Rauhut, Reinhard; Tuschl, Thomas; Dammann, Jutta

CIPO record

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Abstract From the Canadian patent

In Caenorhabditis elegans, lin-4 and let-7 encode 22- and 21 -nucleotide RNAs respectively, that function as key regulators of developmental timing. Because the appearance of these short RNAs is regulated during development they are also referred to as "small temporal RNAs" (stRNAs). We show that many more 21- and 22-nt expressed RNAs termed microRNAs, (miRNAs), exist in invertebrates and vertebrates and that some of these novel RNAs, similar to let-7 stRNA are also highly conserved. This suggests that sequence-specific post-transcriptional regulatory mechanisms mediated by small RNAs are more general than previously appreciated.

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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 September 27, 2002 and granted November 28, 2017. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 27, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 27, 2002
GrantedNovember 28, 2017
Term endedSeptember 27, 2022
Patent numberCA 2937159 C
Classification (IPC)C12N15/11 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedSep 27, 2002Patent grantedNov 28, 2017Term endedSep 27, 2022

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