Patents by Inventor Steven R. Leong

Steven R. Leong 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: 7612170
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind CD28 or CTLA-4, or to induce or inhibit altered level of T cell proliferation response greater compared to that generated by human B7-1. The polypeptides and polynucleotides of the invention are useful in therapeutic and prophylactic treatment methods, gene therapy applications, and vaccines.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: November 3, 2009
    Assignee: Maxygen, Inc.
    Inventors: Juha Punnonen, Alexandra L. L. Lazetic, Steven R. Leong, Jean Chia-Chun Chang
  • Patent number: 7183376
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind CD28 or CTLA-4, or to induce or inhibit altered level of T cell proliferation response greater compared to that generated by human B7-1. The polypeptides and polynucleotides of the invention are useful in therapeutic and prophylactic treatment methods, gene therapy applications, and vaccines.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: February 27, 2007
    Assignee: Maxygen, Inc.
    Inventors: Juha Punnonen, Alexandra Lazetic, Steven R. Leong, Chia-Chun Chang
  • Patent number: 7115712
    Abstract: New cytokine polypeptides, and nucleic acids encoding them, are provided. Compositions including these polypeptides and nucleic acids, recombinant cells comprising said polypeptides and nucleic acids, methods of making the polypeptides and nucleic acid, antibodies to the polypeptides, and methods of using the polypeptides and nucleic acids are provided. Integrated systems comprising the sequences of the nucleic acids or polypeptides are also provided.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: October 3, 2006
    Assignee: Maxygen, Inc.
    Inventors: Steven R. Leong, Juha Punnonen
  • Patent number: 7094875
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind CD28 or CTLA-4, or to induce or inhibit altered level of T cell proliferation response greater compared to that generated by human B7-1. The polypeptides and polynucleotides of the invention are useful in therapeutic and prophylactic treatment methods, gene therapy applications, and vaccines.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: August 22, 2006
    Assignee: Maxygen, Inc.
    Inventors: Juha Punnonen, Alexandra L. L. Lazetic, Steven R. Leong, Chia-Chun Chang
  • Patent number: 6870033
    Abstract: Humanized anti-IL-8 monoclonal antibodies and variants thereof are described for use in diagnostic applications and in the treatment of inflammatory disorders. Also described is a conjugate formed by an antibody fragment covalently attached to a non-proteinaceous polymer, wherein the apparent size of the conjugate is at least about 500 kD. The conjugate exhibits substantially improved half-life, mean residence time, and/or clearance rate in circulation as compared to the underivatized parental antibody fragment.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: March 22, 2005
    Assignee: Genentech, Inc.
    Inventors: Vanessa Hsei, Iphigenia Koumenis, Steven R. Leong, Leonard G. Presta, Zahra Shahrokh, Gerarado A. Zapata
  • Publication number: 20030190697
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind CD28 or CTLA-4, or to induce or inhibit altered level of T cell proliferation response greater compared to that generated by human B7-1. The polypeptides and polynucleotides of the invention are useful in therapeutic and prophylactic treatment methods, gene therapy applications, and vaccines.
    Type: Application
    Filed: June 22, 2001
    Publication date: October 9, 2003
    Inventors: Juha Punnonen, Alexandra L.L. Lazetic, Steven R. Leong, Chia-Chun Jean Chang, Doris Apt, Claes Gustafsson
  • Publication number: 20030138881
    Abstract: The invention provides polynucleotides and polypeptides encoded therefrom having advantageous properties, including an ability of the polypeptides to preferentially bind a CD28 or CTLA-4 receptor at a level greater or less than the ability of human B7-1 to bind CD28 or CTLA-4, or to induce or inhibit altered level of T cell proliferation response greater compared to that generated by human B7-1. The polypeptides and polynucleotides of the invention are useful in therapeutic and prophylactic treatment methods, gene therapy applications, and vaccines.
    Type: Application
    Filed: December 20, 2001
    Publication date: July 24, 2003
    Applicant: Maxygen, Inc.
    Inventors: Juha Punnonen, Alexandra Lazetic, Steven R. Leong, Chia-Chun Chang, Doris Apt, Claes Gustafsson
  • Patent number: 6133426
    Abstract: Humanized anti-IL-8 monoclonal antibodies and variants thereof are described for use in diagnostic applications and in the treatment of inflammatory disorders. Also described is a conjugate formed by an antibody fragment covalently attached to a non-proteinaceous polymer, wherein the apparent size of the conjugate is at least about 500 kD. The conjugate exhibits substantially improved half-life, mean residence time, and/or clearance rate in circulation as compared to the underivatized parental antibody fragment.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: October 17, 2000
    Assignee: Genentech, Inc.
    Inventors: Tania N. Gonzalez, Steven R. Leong, Leonard G. Presta
  • Patent number: 6117980
    Abstract: Humanized anti-IL-8 monoclonal antibodies and variants thereof are described for use in diagnostic applications and in the treatment of inflammatory disorders.
    Type: Grant
    Filed: February 21, 1997
    Date of Patent: September 12, 2000
    Assignee: Genentech, Inc.
    Inventors: Tania N. Gonzalez, Steven R. Leong, Leonard G. Presta
  • Patent number: 6025158
    Abstract: Humanized anti-IL-8 monoclonal antibodies and variants thereof are described for use in diagnostic applications and in the treatment of inflammatory disorders. Also described is a conjugate formed by an antibody fragment covalently attached to a non-proteinaceous polymer, wherein the apparent size of the conjugate is at least about 500 kD. The conjugate exhibits substantially improved half-life, mean residence time, and/or clearance rate in circulation as compared to the underivatized parental antibody fragment.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: February 15, 2000
    Assignee: Genentech, Inc.
    Inventors: Tania N. Gonzalez, Steven R. Leong, Leonard G. Presta
  • Patent number: 5707622
    Abstract: Anti-IL-8 monoclonal antibodies are described for use in diagnostic applications and in the treatment of inflammatory disorders such as inflammatory bowel disease and bacteria pneumonias.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: January 13, 1998
    Assignee: Genentech, Inc.
    Inventors: Sherman Fong, Caroline Alice Hebert, Kyung Jin Kim, Steven R. Leong
  • Patent number: 5702946
    Abstract: Anti-IL-8 monoclonal antibodies are described for use in diagnostic applications and in the treatment of inflammatory disorders such as inflammatory bowel disease and bacteria pneumonias.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: December 30, 1997
    Assignee: Genentech, Inc.
    Inventors: Claire M. Doerschuk, Sherman Fong, Caroline Alice Hebert, Kyung Jin Kim, Steven R. Leong
  • Patent number: 5686070
    Abstract: Anti-IL-8 monoclonal antibodies are described for use in diagnostic applications and in the treatment of inflammatory disorders such as inflammatory bowel disease and bacteria pneumonias.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: November 11, 1997
    Assignees: Genentech, Inc., Indiana University
    Inventors: Claire M. Doerschuk, Sherman Fong, Caroline Alice Hebert, Kyung Jin Kim, Steven R. Leong
  • Patent number: 5677426
    Abstract: Anti-IL-8 monoclonal antibodies are described for use in diagnostic applications and in the treatment of inflammatory disorders such as inflammatory bowel disease and bacteria pneumonias.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: October 14, 1997
    Assignee: Genentech, Inc.
    Inventors: Sherman Fong, Caroline Alice Hebert, Kyung Jin Kim, Steven R. Leong