Modified radioantibody fragments for reduced renal uptake
CA 2200482 C · Owner: Immunomedics, Inc. · Inventors: Hansen, Hans J.; Karacay, Habibe; Griffiths, Gary L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PEG-modified-Tc-99m-radiolabeled antibody fragments are useful for radioimmunodetection of tumors and infectious lesions and display striking reductions in renal uptake and retention of radioisotope compared to non-PEGmodified fragments.
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 September 18, 1995 and granted January 30, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 18, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 18, 2017.
- 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.