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:
Jun. 24, 2025
Filed:
Nov. 04, 2022
Cytiva Bioprocess R&d Ab, Uppsala, SE;
Martin Hall, Uppsala, SE;
Sture Larsson, Uppsala, SE;
Andreas Muranyi, Uppsala, SE;
Gustav Rodrigo, Uppsala, SE;
Jinyu Zou, Uppsala, SE;
Per-Mikael Aberg, Uppsala, SE;
Cytiva Bioprocess R&D AB, Uppsala, SE;
Abstract
The present invention relates to a chromatography ligand, which comprises Domain C fromprotein A (SpA), or a functional fragment or variant thereof. The chromatography ligand presents an advantageous capability of withstanding harsh cleaning in place (CIP) conditions, and is capable of binding Fab fragments of antibodies. The ligand may be provided with a terminal coupling group, such as arginine or cysteine, to facilitate its coupling to an insoluble carrier such as beads or a membrane. The invention also relates to a process of using the ligand in isolation of antibodies, and to a purification protocol which may include washing steps and/or regeneration with alkali.