Compounds and compositions for treating diseases associated with serine protease, particularly tryptase, activity
CA 2285454 A1 · Owner: Rice, Kenneth D. · Inventors: Litvak, Joane; Cutshall, Neil Scott; Wang, Vivian R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel compounds, compositions and methods effective for the prevention and treatment of mast-cell mediated inflammatory disorders are described. A preferred aspect of the invention are compounds of Formula (II) in which: the dashed lines independently represent optional bonds; each R2 independently is (C1-6)alkyl, (C1-6)alkyloxy, halo or hydroxy; each R3 independently is (C1- 6)alkyl, (C1-6)alkyloxy, halo or hydroxy; X3 is -C(O)- or -CR7R8- X8 is -, CH(R1)n1- or -C(R1)n1=, wherein R1 is amino(N1-4)azolidinyl amino(N1-, 4)azolyl, (N1-4)azolidinyl, (N1-4)azolyl -NHC(NH)NR9R9, -C(NR9)R9, -, C(NH)NHR10 -C(NH)NR10R10 or -(CR11R11)yNH2, or X8 is -N= or -NH(R1)n1wherein R1 is -C(NR9)R9, …
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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 December 1, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 1, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 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.
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.