C. difficile specific oligonucleotides
CA 2066027 A1 · Owner: Queen Mary And Westfield College · Inventors: Clayton, Christopher L.; Wren, Brendan W.; Tabaqchali, Soad
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Difficile Specific Oligonucleotides Oligonucleotides having substantially specific binding affinity towards C. difficile DNA are disclosed especially oligonucleotides, specific to the C. difficile A-toxin gene. Such oligonucleotides are useful as DNA probes and PCR primers in the detection of C. difficile in human clinical samples, e.g. faecal samples.
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 December 28, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 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.
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.