Patents by Inventor Pallavur V. Sivakumar

Pallavur V. Sivakumar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20180258172
    Abstract: Disclosed is a newly identified B7 family member, zB7H6, which functions as a counter-receptor for the NK cell triggering receptor, NKp30. Methods and compositions for modulating NKp30-mediated NK cell activity based on the interaction of zB7H6 with NKp30, as well as related screening methods, are also disclosed. Further disclosed are anti-zB7H6 antibodies as well as antibody-drug conjugates comprising an anti-zB7H6 antibody conjugated to a therapeutic agent, including methods for using such antibodies and antibody-drug conjugates to exert therapeutic effects against zB7H6-expressing cells.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 13, 2018
    Inventors: Cameron S. Brandt, Jacob J. Kennedy, Wenfeng Xu, Eugene C. Yi, Brian A. Fox, Zeren Gao, Pallavur V. Sivakumar
  • Patent number: 10005837
    Abstract: Disclosed is a newly identified B7 family member, zB7H6, which functions as a counter-receptor for the NK cell triggering receptor, NKp30. Methods and compositions for modulating NKp30-mediated NK cell activity based on the interaction of zB7H6 with NKp30, as well as related screening methods, are also disclosed. Further disclosed are anti-zB7H6 antibodies as well as antibody-drug conjugates comprising an anti-zB7H6 antibody conjugated to a therapeutic agent, including methods for using such antibodies and antibody-drug conjugates to exert therapeutic effects against zB7H6-expressing cells.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 26, 2018
    Assignee: Zymogenetics, Inc.
    Inventors: Cameron S. Brandt, Jacob J. Kennedy, Wenfeng Xu, Eugene C. Yi, Brian A. Fox, Zeren Gao, Pallavur V. Sivakumar
  • Patent number: 9708390
    Abstract: Disclosed are antagonists of PDGF receptor ? (PDGFR?) and VEGF-A, including neutralizing anti-PDGFR? and anti-VEGF-A antibodies, as well as related compositions and methods. Anti-PDGFR? and anti-VEGF-A antibodies disclosed herein include bispecific antibodies capable of binding and neutralizing both PDGFR? and VEGF-A. Also disclosed are methods of treating an neovascular disorder, such as cancer or an neovascular ocular disorder, using a PDGFR? and/or VEGF-A antagonist.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: July 18, 2017
    Assignee: ZYMOGENETICS, INC.
    Inventors: Pallavur V. Sivakumar, Debra G. Gilbertson, Marshall D. Snavely, George R. Mabry, Eugene C. Yi, Yue Yao, Scott R. Presnell
  • Publication number: 20170037123
    Abstract: Monoclonal antibodies are identified that bind the IL-21 protein. These antibodies are used to identify regions of the IL-21 protein to where binding neutralizes IL-21 activity. Hybridomas and methods of producing anti-IL-21 monoclonal antibodies are described. The monoclonal antibodies are useful in treating IL-21-mediated diseases, which may include autoimmune and inflammatory diseases such as pancreatitis, type I diabetes (IDDM), Graves Disease, inflammatory bowel disease (IBD), Crohn's Disease, ulcerative colitis, irritable bowel syndrome, multiple sclerosis, rheumatoid arthritis, diverticulosis, systemic lupus erythematosus, psoriasis, ankylosing spondylitis, scleroderma, systemic sclerosis, psoriatic arthritis, osteoarthritis, atopic dermatitis, vitiligo, graft vs.
    Type: Application
    Filed: June 9, 2016
    Publication date: February 9, 2017
    Inventors: Pallavur V. SIVAKUMAR, Stephen R. JASPERS
  • Publication number: 20160311909
    Abstract: Disclosed are antagonists of PDGF receptor ? (PDGFR?) and VEGF-A, including neutralizing anti-PDGFR? and anti-VEGF-A antibodies, as well as related compositions and methods. Anti-PDGFR? and anti-VEGF-A antibodies disclosed herein include bispecific antibodies capable of binding and neutralizing both PDGFR? and VEGF-A. Also disclosed are methods of treating an neovascular disorder, such as cancer or an neovascular ocular disorder, using a PDGFR? and/or VEGF-A antagonist.
    Type: Application
    Filed: July 11, 2016
    Publication date: October 27, 2016
    Inventors: Pallavur V. SIVAKUMAR, Debra G. Gilberson, Marshall D. Snavely, George R. Mabry, Eugene C. Yi, Yue Yao, Scott R. Presnell
  • Patent number: 9441034
    Abstract: Disclosed are antagonists of PDGF receptor ? (PDGFR?) and VEGF-A, including neutralizing anti-PDGFR? and anti-VEGF-A antibodies, as well as related compositions and methods. Anti-PDGFR? and anti-VEGF-A antibodies disclosed herein include bispecific antibodies capable of binding and neutralizing both PDGFR? and VEGF-A. Also disclosed are methods of treating an neovascular disorder, such as cancer or an neovascular ocular disorder, using a PDGFR? and/or VEGF-A antagonist.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: September 13, 2016
    Assignee: ZYMOGENETICS, INC.
    Inventors: Pallavur V. Sivakumar, Debra G. Gilbertson, Marshall D. Snavely, George R. Mabry, Eugene C. Yi, Yue Yao, Scott R. Presnell
  • Patent number: 9388241
    Abstract: Monoclonal antibodies are identified that bind the IL-21 protein. These antibodies are used to identify regions of the IL-21 protein to where binding neutralizes IL-21 activity. Hybridomas and methods of producing anti-IL-21 monoclonal antibodies are described. The monoclonal antibodies are useful in treating IL-21-mediated diseases, which may include autoimmune and inflammatory diseases such as pancreatitis, type I diabetes (IDDM), Graves Disease, inflammatory bowel disease (IBD), Crohn's Disease, ulcerative colitis, irritable bowel syndrome, multiple sclerosis, rheumatoid arthritis, diverticulosis, systemic lupus erythematosus, psoriasis, ankylosing spondylitis, scleroderma, systemic sclerosis, psoriatic arthritis, osteoarthritis, atopic dermatitis, vitiligo, graft vs. host disease (GVHD), cutaneous T cell lymphoma (CTCL), Sjogren's syndrome, glomerulonephritis, IgA nephropathy, transplant rejection, atopic dermatitis, anti-phospholipid syndrome, and asthma, and other autoimmune diseases.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 12, 2016
    Assignee: ZymoGenetics, Inc.
    Inventors: Pallavur V. Sivakumar, Stephen R. Jaspers
  • Publication number: 20150175702
    Abstract: Disclosed is a newly identified B7 family member, zB7H6, which functions as a counter-receptor for the NK cell triggering receptor, NKp30. Methods and compositions for modulating NKp30-mediated NK cell activity based on the interaction of zB7H6 with NKp30, as well as related screening methods, are also disclosed. Further disclosed are anti-zB7H6 antibodies as well as antibody-drug conjugates comprising an anti-zB7H6 antibody conjugated to a therapeutic agent, including methods for using such antibodies and antibody-drug conjugates to exert therapeutic effects against zB7H6-expressing cells.
    Type: Application
    Filed: January 21, 2015
    Publication date: June 25, 2015
    Inventors: Cameron S. BRANDT, Jacob J. Kennedy, Wenfeng Xu, Eugene C. YI, Brian A. Fox, Zeren Gao, Pallavur V. Sivakumar
  • Patent number: 8969518
    Abstract: Disclosed is a newly identified B7 family member, zB7H6, which functions as a counter-receptor for the NK cell triggering receptor, NKp30. Methods and compositions for modulating NKp30-mediated NK cell activity based on the interaction of zB7H6 with NKp30, as well as related screening methods, are also disclosed. Further disclosed are anti-zB7H6 antibodies as well as antibody-drug conjugates comprising an anti-zB7H6 antibody conjugated to a therapeutic agent, including methods for using such antibodies and antibody-drug conjugates to exert therapeutic effects against zB7H6-expressing cells.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: March 3, 2015
    Assignee: Zymogenetics, Inc.
    Inventors: Cameron S. Brandt, Jacob J. Kennedy, Wenfeng Xu, Eugene C. Yi, Brian A. Fox, Zeren Gao, Pallavur V. Sivakumar
  • Patent number: 8816053
    Abstract: IL-28A, IL-28B, IL-29, and certain mutants thereof have been shown to have antiviral activity on a spectrum of viral species. Of particular interest is the antiviral activity demonstrated on viruses that infect liver, such as hepatitis B virus and hepatitis C virus. In addition, IL-28A, IL-28B, IL-29, and mutants thereof do not exhibit some of the antiproliferative activity on hematopoietic cells that is observed with interferon treatment. Without the immunosuppressive effects accompanying interferon treatment, IL-28A, IL-28B, and IL-29 will be useful in treating immunocompromised patients for viral infections.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: August 26, 2014
    Assignee: ZymoGenetics, Inc.
    Inventors: Kevin M. Klucher, Wayne R. Kindsvogel, Pallavur V. Sivakumar, Katherine E. Henderson
  • Patent number: 8790643
    Abstract: Monoclonal antibodies to the IL-21 receptor and multimeric complexes comprising the IL-21 receptor; including monoclonal antibodies to the heterodimeric receptor, IL-21/IL-2R?; have been prepared. The invention also describes a method of producing said antibodies. And, the invention also describes a method of treatment comprising using said antibodies to suppress an immune response.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: July 29, 2014
    Assignee: ZymoGenetics, Inc.
    Inventors: Pallavur V. Sivakumar, Stephen R. Jaspers
  • Publication number: 20130315919
    Abstract: The present invention relates to blocking, inhibiting, reducing, antagonizing or neutralizing the activity of IL-22, IL-20, or both IL-20 and IL-22 polypeptide molecules. IL-20 and IL-22 are cytokines that are involved in inflammatory processes and human disease. IL-22RA (zcytor11) is a common receptor for IL-20 and IL-22. The present invention includes anti-IL-22RA antibodies and binding partners, as well as methods for antagonizing IL-22 or both IL-20 and IL-22 using such antibodies and binding partners.
    Type: Application
    Filed: August 6, 2013
    Publication date: November 28, 2013
    Applicant: ZYMOGENETICS, INC.
    Inventors: Wenfeng XU, Wayne R. KINDSVOGEL, Yasmin A. CHANDRASEKHER, Stacey R. DILLON, Joyce M. LEHNER, Anthony W. SIADAK, Pallavur V. SIVAKUMAR, Margaret Dow MOORE
  • Publication number: 20130273000
    Abstract: IL-28A, IL-28B, IL-29, and certain mutants thereof have been shown to have antiviral activity on a spectrum of viral species. Of particular interest is the antiviral activity demonstrated on viruses that infect liver, such as hepatitis B virus and hepatitis C virus. In addition, IL-28A, IL-28B, IL-29, and mutants thereof do not exhibit some of the antiproliferative activity on hematopoietic cells that is observed with interferon treatment. Without the immunosuppressive effects accompanying interferon treatment, IL-28A, IL-28B, and IL-29 will be useful in treating immunocompromised patients for viral infections.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 17, 2013
    Inventors: Kevin M. Klucher, Pallavur V. Sivakumar, Wayne R. Kindsvogel, Katherine E. Henderson
  • Patent number: 8536309
    Abstract: The present invention relates to blocking, inhibiting, reducing, antagonizing or neutralizing the activity of IL-22, IL-20, or both IL-20 and IL-22 polypeptide molecules. IL-20 and IL-22 are cytokines that are involved in inflammatory processes and human disease. IL-22RA (zcytor11) is a common receptor for IL-20 and IL-22. The present invention includes anti-IL-22RA antibodies and binding partners, as well as methods for antagonizing IL-22 or both IL-20 and IL-22 using such antibodies and binding partners.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: September 17, 2013
    Assignee: ZymoGenetics, Inc.
    Inventors: Wenfeng Xu, Wayne R. Kindsvogel, Yasmin A. Chandrasekher, Stacey R. Dillon, Joyce M. Lehner, Anthony W. Siadak, Pallavur V. Sivakumar, Margaret D. Moore
  • Patent number: 8361954
    Abstract: Methods for treating patients with cancer and autoimmune disorders using IL-28 and IL-29 molecules. The IL-28 and IL-29 molecules include polypeptides that have homology to the human IL-28 or IL-29 polypeptide sequence and proteins fused to a polypeptide with IL-28 and IL-29 functional activity. The molecules can be used as a monotherapy or in combination with other known cancer and/or autoimmune therapeutics.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: January 29, 2013
    Assignee: ZymoGenetics, Inc.
    Inventors: Sean Doyle, Kevin M. Klucher, Pallavur V. Sivakumar, Wayne R. Kindsvogel, Chung Chan
  • Publication number: 20130022571
    Abstract: IL-28A, IL-28B, IL-29, and certain mutants thereof have been shown to have antiviral activity on a spectrum of viral species. Of particular interest is the antiviral activity demonstrated on viruses that infect liver, such as hepatitis B virus and hepatitis C virus. In addition, IL-28A, IL-28B, IL-29, and mutants thereof do not exhibit some of the antiproliferative activity on hematopoietic cells that is observed with interferon treatment. Without the immunosuppressive effects accompanying interferon treatment, IL-28A, IL-28B, and IL-29 will be useful in treating immunocompromised patients for viral infections.
    Type: Application
    Filed: September 7, 2012
    Publication date: January 24, 2013
    Inventors: Kevin M. Klucher, Wayne R. Kindsvogel, Pallavur V. Sivakumar, Katherine E. Henderson
  • Patent number: 8318147
    Abstract: IL-28A, IL-28B, IL-29, and certain mutants thereof have been shown to have antiviral activity on a spectrum of viral species. Of particular interest is the antiviral activity demonstrated on viruses that infect liver, such as hepatitis B virus and hepatitis C virus. In addition, IL-28A, IL-28B, IL-29, and mutants thereof do not exhibit some of the antiproliferative activity on hematopoietic cells that is observed with interferon treatment. Without the immunosuppressive effects accompanying interferon treatment, IL-28A, IL-28B, and IL-29 will be useful in treating immunocompromised patients for viral infections.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: November 27, 2012
    Assignee: ZymoGenetics, Inc.
    Inventors: Kevin M. Klucher, Pallavur V Sivakumar, Wayne R Kindsvogel, Katherine E Henderson
  • Publication number: 20120282250
    Abstract: Monoclonal antibodies are identified that bind the IL-21 protein. These antibodies are used to identify regions of the IL-21 protein to where binding neutralizes IL-21 activity. Hybridomas and methods of producing anti-IL-21 monoclonal antibodies are described. The monoclonal antibodies are useful in treating IL-21-mediated diseases, which may include autoimmune and inflammatory diseases such as pancreatitis, type I diabetes (IDDM), Graves Disease, inflammatory bowel disease (IBD), Crohn's Disease, ulcerative colitis, irritable bowel syndrome, multiple sclerosis, rheumatoid arthritis, diverticulosis, systemic lupus erythematosus, psoriasis, ankylosing spondylitis, scleroderma, systemic sclerosis, psoriatic arthritis, osteoarthritis, atopic dermatitis, vitiligo, graft vs.
    Type: Application
    Filed: June 8, 2012
    Publication date: November 8, 2012
    Applicant: ZYMOGENETICS, INC.
    Inventors: Pallavur V. SIVAKUMAR, Stephen R. JASPERS
  • Patent number: 8283448
    Abstract: IL-28A, IL-28B, IL-29, and certain mutants thereof have been shown to have antiviral activity on a spectrum of viral species. Of particular interest is the antiviral activity demonstrated on viruses that infect liver, such as hepatitis B virus and hepatitis C virus. In addition, IL-28A, IL-28B, IL-29, and mutants thereof do not exhibit some of the antiproliferative activity on hematopoietic cells that is observed with interferon treatment. Without the immunosuppressive effects accompanying interferon treatment, IL-28A, IL-28B, and IL-29 will be useful in treating immunocompromised patients for viral infections.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: October 9, 2012
    Assignee: ZymoGenetics, Inc.
    Inventors: Kevin M. Klucher, Wayne R. Kindsvogel, Pallavur V. Sivakumar, Katherine E Henderson
  • Publication number: 20120207761
    Abstract: The present invention relates to blocking, inhibiting, reducing, antagonizing or neutralizing the activity of IL-22, IL-20, or both IL-20 and IL-22 polypeptide molecules. IL-20 and IL-22 are cytokines that are involved in inflammatory processes and human disease. IL-22RA (zcytor11) is a common receptor for IL-20 and IL-22. The present invention includes anti-IL-22RA antibodies and binding partners, as well as methods for antagonizing IL-22 or both IL-20 and IL-22 using such antibodies and binding partners.
    Type: Application
    Filed: March 22, 2012
    Publication date: August 16, 2012
    Applicant: ZYMOGENETICS, INC.
    Inventors: Wenfeng XU, Wayne KINDSVOGEL, Yasmin A. CHANDRASEKHER, Stacey R. DILLON, Joyce M. LEHNER, Anthony W. SIADAK, Pallavur V. SIVAKUMAR, Margaret Dow MOORE