Patents Assigned to Xencor, Inc.
  • Patent number: 12617872
    Abstract: The invention relates generally to compositions and methods for purifying the desired species from a mixture of desired heterodimer and contaminating homodimer immunoglobulin variants by modifying the isoelectric point(s) of the individual chains.
    Type: Grant
    Filed: September 16, 2025
    Date of Patent: May 5, 2026
    Assignee: Xencor, Inc.
    Inventors: Gregory L. Moore, Gregory Lazar
  • Patent number: 12559572
    Abstract: The present invention relates to immunoglobulins that bind IgE and Fc?RIIb with high affinity, said compositions being capable of inhibiting cells that express membrane-anchored IgE. Such compositions are useful for treating IgE-mediated disorders, including allergies and asthma.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: February 24, 2026
    Assignee: Xencor, Inc.
    Inventors: John R Desjarlais, Seung Y. Chu, Holly M. Horton, Matthew J. Bernett
  • Patent number: 12509518
    Abstract: The present disclosure relates to immunoglobulins that bind Fc?RIIb+ B cells and coengage CD19 on the cell's surface and an Fc?RIIb on the cell's surface, methods for their generation, and methods for using the immunoglobulins for the treatment of an IgG4-related disease.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: December 30, 2025
    Assignee: Xencor, Inc.
    Inventors: Debra Zack, John H. Stone, Shiv Pillai, Paul Foster
  • Patent number: 12509495
    Abstract: The present invention is directed to novel targeted heterodimeric fusion proteins comprising an IL-15/IL-15R? Fc-fusion protein and a LAG-3 antibody fragment-Fc fusion protein.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: December 30, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew J. Bernett, John Desjarlais, Rumana Rashid, Rajat Varma, Christine Bonzon
  • Patent number: 12497457
    Abstract: The present invention relates to immunoglobulins that bind Fc?RIIb+ cells and coengage the antigen on the cell's surface and an Fc?RIIb on the cell's surface, methods for their generation, and methods for using the immunoglobulins.
    Type: Grant
    Filed: August 11, 2022
    Date of Patent: December 16, 2025
    Assignee: Xencor, Inc.
    Inventors: Seung Yup Chu, John R. Desjarlais, Sher Bahadur Karki, Gregory Alan Lazar, Gregory L. Moore, Igor Vostiar
  • Patent number: 12492253
    Abstract: Provided herein anti-human claudin 6 (CLDN6) and anti-human C5 antibodies.
    Type: Grant
    Filed: May 23, 2025
    Date of Patent: December 9, 2025
    Assignee: Xencor, Inc.
    Inventors: Aaron Keith Chamberlain, Bassil Dahiyat, John R. Desjarlais, Sher Bahadur Karki, Gregory Alan Lazar
  • Patent number: 12486311
    Abstract: The present application relates to CTLA4-Ig immunoadhesins that target CD80 and CD86, and their use, particularly for therapeutic purposes.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: December 2, 2025
    Assignee: Xencor, Inc.
    Inventors: Gregory A. Lazar, Matthew J. Bernett
  • Patent number: 12466897
    Abstract: The invention relates generally to compositions and methods for purifying the desired species from a mixture of desired heterodimer and contaminating homodimer immunoglobulin variants by modifying the isoelectric point(s) of the individual chains.
    Type: Grant
    Filed: March 21, 2025
    Date of Patent: November 11, 2025
    Assignee: Xencor, Inc.
    Inventors: Gregory L. Moore, Gregory Lazar
  • Patent number: 12448423
    Abstract: The present invention is directed to a novel targeted heterodimeric Fc fusion proteins comprising an IL-15/IL-15R? Fc fusion protein and an NKG2D antigen binding domain Fc fusion proteins.
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: October 21, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew J. Bernett, John R. Desjarlais, Rajat Varma, Gregory Moore, Juan Diaz, Alex Nisthal, Ke Liu, Rumana Rashid, Eric Chang
  • Patent number: 12415849
    Abstract: In one aspect, the present invention provides heterodimeric antibodies comprising a first monomer comprising a first heavy chain constant domain comprising a first variant Fc domain and a first antigen binding domain and a second monomer comprising a second heavy chain constant domain comprising a second variant Fc domain and a second antigen binding domain. In an additional aspect the heterodimeric antibody comprises a first monomer comprising a heavy chain comprising a first Fc domain and a single chain Fv region (scFv) that binds a first antigen, wherein the scFv comprises a charged scFv linker. The heterodimeric antibody further comprises a second monomer comprising a first heavy chain comprising a second Fc domain and a first variable heavy chain and a first light chain.
    Type: Grant
    Filed: September 7, 2023
    Date of Patent: September 16, 2025
    Assignee: Xencor, Inc.
    Inventors: Gregory Moore, Matthew Bernett, Rumana Rashid, John Desjarlais
  • Patent number: 12404329
    Abstract: Provided herein are novel antigen binding domains and antibodies (e.g., heterodimeric antibodies) that bind Prostate Specific Membrane Antigen (PSMA). In exemplary embodiments, the anti-PSMA antibodies also bind CD3. Such antibodies that bind PSMA and CD3 are useful, for example in the treatment of PSMA-related cancer.
    Type: Grant
    Filed: January 17, 2024
    Date of Patent: September 2, 2025
    Assignee: Xencor, Inc.
    Inventors: John R. Desjarlais, Alex Nisthal, Michael Hedvat, Matthew Adam Dragovich
  • Patent number: 12398207
    Abstract: Provided herein are novel CLDN6 binding domains, and anti-CLDN6×anti-CD3 antibodies that include such CLDN6 binding domains. Also provided herein are methods of using such antibodies for the treatment of CLDN6-associated cancers.
    Type: Grant
    Filed: August 20, 2024
    Date of Patent: August 26, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew S. Faber, Sung-Hyung Lee, Yoon Kyung Kim, Jing Qi, Kendra N. Avery, Seung Y. Chu, Alex Nisthal, Matthew J. Bernett, John R. Desjarlais, Chad Borchert
  • Patent number: 12378313
    Abstract: The present invention provides binding agents comprising at least two binding domains, wherein a first binding domain has specificity for CLDN18.2 and a second binding domain has specificity for CD3, and methods of using these binding agents or nucleic acids encoding therefor for treating cancer.
    Type: Grant
    Filed: July 5, 2023
    Date of Patent: August 5, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew Bernett, Alex Nisthal, Gregory Moore
  • Patent number: 12378326
    Abstract: Provided herein are novel anti-CD28×anti-PSMA antibodies and methods of using such antibodies for the treatment of PSMA-associated cancers. Subject anti-CD28×anti-PSMA antibodies are capable of agonistically binding to CD28 costimulatory molecules on T cells and PSMA on tumor cells. Thus, such antibodies selectively enhance anti-tumor activity at tumor sites while minimizing peripheral toxicity. The subject antibodies provided herein are particularly useful in combination with other anti-cancer therapies (e.g., anti-CD3×anti-PSMA antibodies) for the treatment of prostate cancers.
    Type: Grant
    Filed: February 13, 2024
    Date of Patent: August 5, 2025
    Assignee: Xencor, Inc.
    Inventors: John R. Desjarlais, Gregory Moore, Michael Hedvat, Juan Diaz, Veronica Gusti Zeng, Matthew Adam Dragovich, Joseph Erhardt, Theresa McDevitt, Fouad Moussa, Pankaj Seth, Fei Shen, Adam Zwolak
  • Patent number: 12365743
    Abstract: Provided herein are novel anti-CD28× anti-PSMA antibodies and methods of using such antibodies for the treatment of PSMA-associated cancers. Subject anti-CD28× anti-PSMA antibodies are capable of agonistically binding to CD28 costimulatory molecules on T cells and PSMA on tumor cells. Thus, such antibodies selectively enhance anti-tumor activity at tumor sites while minimizing peripheral toxicity. The subject antibodies provided herein are particularly useful in combination with other anti-cancer therapies (e.g., anti-CD3× anti-PSMA antibodies) for the treatment of prostate cancers.
    Type: Grant
    Filed: February 22, 2023
    Date of Patent: July 22, 2025
    Assignee: Xencor, Inc.
    Inventors: John R. Desjarlais, Gregory Moore, Michael Hedvat, Juan Diaz, Veronica Gusti Zeng, Matthew Adam Dragovich, Joseph Erhardt, Theresa McDevitt, Fouad Moussa, Pankaj Seth, Fei Shen, Adam Zwolak
  • Patent number: 12359002
    Abstract: The present invention is directed to novel heterodimeric antibodies.
    Type: Grant
    Filed: April 27, 2023
    Date of Patent: July 15, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew Bernett, Gregory Moore, John Desjarlais, Seung Chu, Rumana Rashid, Umesh Muchhal, Sung-Hyung Lee
  • Publication number: 20250197519
    Abstract: Provided herein are novel anti-CD20 antibodies that exhibit several advantageous properties as compared to rituximab.
    Type: Application
    Filed: October 22, 2021
    Publication date: June 19, 2025
    Applicant: Xencor, Inc.
    Inventors: Matthew BERNETT, Gregory MOORE, John R. DESJARLAIS
  • Publication number: 20250115667
    Abstract: The present invention is directed to methods for treating a solid cancerous cancer through administering a bispecific anti-PD1 x anti-CTLA4 antibody.
    Type: Application
    Filed: May 16, 2024
    Publication date: April 10, 2025
    Applicant: XENCOR, INC.
    Inventors: Barbara HICKINGBOTTOM, Paul FOSTER
  • Patent number: 12239688
    Abstract: The present invention is directed to novel IL-15/IL-15R? heterodimeric Fc fusion proteins and uses thereof. The IL-15/IL-15R? heterodimeric Fc fusion proteins can be administered to a patient to treat cancer. In some cases, the IL-15/IL-15R? heterodimeric Fc fusion protein is administered in combination with a checkpoint blockage antibody such as a PD-1 antibody.
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: March 4, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew Bernett, John Desjarlais, Rumana Rashid, Rajat Varma, Christine Bonzon
  • Patent number: 12234270
    Abstract: The present invention provides novel IL-12 Fc fusion proteins, methods of making and using the same. The IL-12 Fc fusion proteins are useful for treatment of cancer and can be used in combination with checkpoint blockade.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: February 25, 2025
    Assignee: Xencor, Inc.
    Inventors: Matthew Bernett, John R. Desjarlais, Rajat Varma, Ke Liu, Nargess Hassanzadeh-Kiabi, Rumana Rashid