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).

  • Patent number: 8222374
    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: Grant
    Filed: March 1, 2011
    Date of Patent: July 17, 2012
    Assignee: ZymoGenetics, Inc.
    Inventors: Pallavur V. Sivakumar, Stephen R. Jaspers
  • Publication number: 20120156210
    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: January 12, 2012
    Publication date: June 21, 2012
    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: 20120134993
    Abstract: Disclosed are bispecific binding proteins comprising a antibody/soluble receptor bispecific binding protein that reduces the biological activity of both VEGF-A and FGF. The FGF binding moieties are generally soluble FGFR3 or FGFR2. An Fc polypeptide is fused to the C-terminus of the FGF binding moiety and VEGF-A binding moiety are polypeptides fused using peptide or polypeptide linker sequences, and can be expressed as single bispecific binding protein. The bispecific antibody/soluble receptor binding proteins can be used to treat cancers characterized by solid tumor growth as well as other diseases.
    Type: Application
    Filed: March 26, 2010
    Publication date: May 31, 2012
    Inventors: Qi Pan, Carl W. Birks, Pallavur V. Sivakumar
  • Patent number: 8163286
    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: October 16, 2009
    Date of Patent: April 24, 2012
    Assignee: ZymoGenetics, Inc.
    Inventors: Wenfeng Xu, Wayne Kindsvogel, Yasmin A. Chandrasekher, Stacey R. Dillon, Joyce M. Lehner, Anthony W. Siadak, Pallavur V. Sivakumar, Margaret D. Moore
  • Patent number: 8124088
    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: April 14, 2009
    Date of Patent: February 28, 2012
    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 Dow Moore
  • Publication number: 20120020919
    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 6, 2011
    Publication date: January 26, 2012
    Inventors: Kevin M. Klucher, Pallavur V. Sivakumar, Wayne R. Kindsvogel, Katherine E. Henderson
  • Publication number: 20110300101
    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: July 26, 2011
    Publication date: December 8, 2011
    Inventors: Kevin M. Klucher, Wayne R. Kindsvogel, Pallavur V. Sivakumar, Katherine E. Henderson
  • Publication number: 20110300098
    Abstract: Methods for treating cancer by co-administering a therapeutic monoclonal antibody with IL-21 are described. Exemplary monoclonal antibodies that can be used are rituximab, trastuzumab and anti-CTLA-4 antibodies. The enhanced antitumor of the combination therapy is particularly useful for patient populations that are recalcitrant to monoclonal therapy, relapse after treatment with monoclonal antibodies or where the enhanced IL-21 antitumor effect reduces toxicities associated with treatment using the monoclonal antibodies.
    Type: Application
    Filed: June 29, 2010
    Publication date: December 8, 2011
    Inventors: Wayne R. Kindsvogel, Steven D. Hughes, Richard D. Holly, Christopher H. Clegg, Donald C. Foster, Rebecca A. Johnson, Mark D. Heipel, Pallavur V. Sivakumar
  • Publication number: 20110177074
    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: March 27, 2009
    Publication date: July 21, 2011
    Inventors: Pallavur V. Sivakumar, Debra G. Gilbertson, Marshall D. Snavely, George R. Mabry, Eugene C. Yi, Yue Yao, Scott R. Presnell
  • Publication number: 20110172399
    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: March 1, 2011
    Publication date: July 14, 2011
    Inventors: PALLAVUR V. SIVAKUMAR, STEPHEN R. JASPERS
  • Publication number: 20110086004
    Abstract: Methods for treating cancer by co-administering a therapeutic monoclonal antibody with IL-21 are described. Exemplary monoclonal antibodies that can be used are rituximab, trastuzumab and anti-CTLA-4 antibodies. The enhanced antitumor of the combination therapy is particularly useful for patient populations that are recalcitrant to monoclonal therapy, relapse after treatment with monoclonal antibodies or where the enhanced IL-21 antitumor effect reduces toxicities associated with treatment using the monoclonal antibodies.
    Type: Application
    Filed: November 17, 2010
    Publication date: April 14, 2011
    Inventors: Wayne R. Kindsvogel, Steven D. Hughes, Richard D. Holly, Christopher H. Clegg, Donald C. Foster, Rebecca A. Johnson, Mark D. Heipel, Pallavur V. Sivakumar
  • Patent number: 7923539
    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: Grant
    Filed: July 24, 2008
    Date of Patent: April 12, 2011
    Assignee: ZymoGenetics, Inc.
    Inventors: Pallavur V. Sivakumar, Stephen R. Jaspers
  • Publication number: 20110081340
    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: Application
    Filed: November 8, 2010
    Publication date: April 7, 2011
    Inventors: Pallavur V. Sivakumar, Stephen R. Jaspers
  • Publication number: 20110081346
    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: November 10, 2010
    Publication date: April 7, 2011
    Inventors: CAMERON S. BRANDT, JACOB J. KENNEDY, WENFENG XU, EUGENE C. YI, BRIAN A. FOX, ZEREN GAO, PALLAVUR V. SIVAKUMAR
  • Patent number: 7871616
    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: August 12, 2009
    Date of Patent: January 18, 2011
    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 Dow Moore
  • Publication number: 20110008280
    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: May 20, 2010
    Publication date: January 13, 2011
    Inventors: Kevin M. Klucher, Wayne R. Kindsvogel, Pallavur V. Sivakumar, Katherine E. Henderson
  • Publication number: 20100297068
    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: October 29, 2009
    Publication date: November 25, 2010
    Inventors: Kevin M. Klucher, Pallavur V. Sivakumar, Wayne R. Kindsvogel, Katherine E. Henderson
  • Publication number: 20100291030
    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: Application
    Filed: June 17, 2010
    Publication date: November 18, 2010
    Inventors: Sean Doyle, Kevin M. Klucher, Pallavur V. Sivakumar, Wayne R. Kindsvogel, Chung Chan
  • Patent number: 7786075
    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: February 12, 2008
    Date of Patent: August 31, 2010
    Assignee: ZymoGenetics, LLC
    Inventors: Sean Doyle, Kevin M. Klucher, Pallavur V. Sivakumar, Wayne R. Kindsvogel, Chung Chan
  • Publication number: 20100210825
    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 12, 2009
    Publication date: August 19, 2010
    Inventors: WENFENG XU, WAYNE R. KINDSVOGEL, YASMIN A. CHANDRASEKHER, STACEY R. DILLON, JOYCE M. LEHNER, ANTHONY W. SIADAK, PALLAVUR V. SIVAKUMAR, MARGARET DOW MOORE