Antibody-drug conjugates
CA 2121990 A1 · Owner: Eli Lilly And Company · Inventors: Barton, Russell L.; Briggs, Stephen L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The science of pharmaceutical chemistry has progressively provided more and more specific and potent drugs for the treatment and prevention of illnesses. However until quite recently, there has been no means to direct a drug to the specific part of the body where it is needed. Thus, although it is often possible to treat a patient with a drug which has the specific effect which is needed, and no other effect on the body it is still, necessary to administer a whole-body dose. On the other hand, if it were possible to direct a drug to the organ tissue or even cell in need of the treatment it would, often be possible to administer an extremely small total dose, since the drug would concentrate …
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 April 22, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2016.
- 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.