Tumour vaccine
CA 2307639 A1 · Owner: Kircheis, Ralf · Inventors: Crommelin, Daan J. A.; Storm, Gert; Kircheis, Ralf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a tumour vaccine with a tumour antigen base. In addition to a source of tumour antigens the vaccine contains a release system for the delayed release of the active agent IFN-.gamma. the active dose of IFN-.gamma. being 50 ng to 5 µg. The IFN-.gamma. is released over a period ranging from several hours to several days. The IFN-.gamma. release system consists preferably of liposomes, and the tumour antigen source preferably of allogenic tumour cells.
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 October 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2020.
- 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.