Readily isolated bispecific antibodies with native immunoglobulin format

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United States of America Patent

PATENT NO 9982013
SERIAL NO

15058026

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A bispecific antibody format providing ease of isolation is provided, comprising immunoglobulin heavy chain variable domains that are differentially modified in the CH3 domain, wherein the differential modifications are non-immunogenic or substantially non-immunogenic with respect to the CH3 modifications, and at least one of the modifications results in a differential affinity for the bispecific antibody for an affinity reagent such as Protein A, and the bispecific antibody is isolable from a disrupted cell, from medium, or from a mixture of antibodies based on its affinity for Protein A.

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Patent Owner(s)

  • REGENERON PHARMACEUTICALS, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Davis, Samuel New York, US 108 2593
MacDonald, Douglas New York, US 56 1552
Olson, Kara Louise White Plains, US 6 426
Smith, Eric New York, US 253 3725

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