The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 03, 2026
Filed:
Sep. 29, 2021
Hoffmann-la Roche Inc., Little Falls, NJ (US);
Ulrich Brinkmann, Weilheim, DE;
Alexander Bujotzek, Munich, DE;
Guy Georges, Habach, DE;
Anja Schrade, Penzberg, DE;
Hoffmann-La Roche Inc., Little Falls, NJ (US);
Abstract
Herein is reported a method for increasing the (avid-)binding specificity of a bispecific antibody comprising a first mammalian or mammalianized binding site specifically binding to a first (cell-surface) antigen and a second binding site specifically binding to a second (cell-surface) antigen, wherein the first mammalian or mammalianized binding site is at least a pair of an immunoglobulin light chain variable domain and immunoglobulin heavy chain variable domain, by decreasing the binding affinity of the mammalian or mammalianized binding site to its antigen by mutating in the first mammalian or mammalianized binding site at least one amino acid residue at a position in the CDRs of the light chain variable domain or in the CDR1 or CDR2 of the heavy chain variable domain or in the two framework positions directly preceding the CDR3 in the heavy chain variable domain to an amino acid residue present at said position in a germline immunoglobulin amino acid sequence of the same mammalian species as that of the mammalian or mammalianized binding site.