Intermediates for the preparation of lipoxin a4 analogs
CA 2706872 C · Owner: Bayer Intellectual Property Gmbh · Inventors: Parkinson, John F.; Skuballa, Werner; Subramanyam, Babu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Lipoxin A4 analogs are useful in treating inflammatory and autoimmune disorders in , humans. These analogs are also useful in treating pulmonary or respiratory tract , inflammation in humans. This invention is directed to intermediates in the preparation of , lipoxin A4 analogs of the following formulas (L) and (M) wherein R7a, R10, R14 and R14a , are described herein. (see formula L) (see formula M)
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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 November 5, 2002 and granted March 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 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.
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.