Patents by Inventor Walter Blättler

Walter Blättler 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: 8337856
    Abstract: The application concerns methods of treatment using anti-ErbB receptor antibody-maytansinoid conjugates, and articles of manufacture suitable for use in such methods. In particular, the invention concerns ErbB receptor-directed cancer therapies, using anri-ErbB receptor antibody-maytansinoid conjugates.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: December 25, 2012
    Assignee: Immunogen, Inc.
    Inventors: Walter Blättler, Ravi V. J. Chari
  • Patent number: 8093358
    Abstract: The application concerns methods of treatment using anti-ErbB receptor antibody-maytansinoid conjugates, and articles of manufacture suitable for use in such methods. In particular, the invention concerns ErbB receptor-directed cancer therapies, using anri-ErbB receptor antibody-maytansinoid conjugates.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: January 10, 2012
    Assignee: Immunogen, Inc.
    Inventors: Walter Blättler, Ravi V. J. Chari
  • Patent number: 8088387
    Abstract: The present invention discloses a method for targeting maytansinoids to a selected cell population, the method comprising contacting a cell population or tissue suspected of containing the selected cell population with a cell-binding agent maytansinoid conjugate, wherein one or more maytansinoids is covalently linked to the cell-binding agent via a non-cleavable linker and the cell-binding agent binds to cells of the selected cell population.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: January 3, 2012
    Assignee: Immunogen Inc.
    Inventors: Rita M. Steeves, Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 7585857
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: September 8, 2009
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 7550609
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: June 23, 2009
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 7528130
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: May 5, 2009
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 7476669
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: January 13, 2009
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 7217819
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: August 16, 2005
    Date of Patent: May 15, 2007
    Assignee: ImmunoGen, Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 7008942
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: March 7, 2006
    Assignee: Immunogen, Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 6706708
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: March 16, 2004
    Assignee: Immunogen, Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 6630579
    Abstract: A cytotoxic agent comprising one or more modified doxorubicins/daunorubicin linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more modified doxorubicins/daunorubicins covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more modified doxorubicins/daunorubicins linked to a cell binding agent. Novel sulfur-containing modified doxorubicins/daunorubicins.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: October 7, 2003
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 6436931
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: August 20, 2002
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: 6340701
    Abstract: A cytotoxic agent comprising one or more taxanes linked to a cell binding agent. A therapeutic composition for killing selected cell populations comprising: (A) a cytotoxic amount of one or more taxanes covalently bonded to a cell binding agent through a linking group, and (B) a pharmaceutically acceptable carrier, diluent or excipient. A method for killing selected cell populations comprising contacting target cells or tissue containing target cells with an effective amount of a cytotoxic agent comprising one or more taxanes linked to a cell binding agent. Novel sulfur-containing taxanes.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: January 22, 2002
    Assignee: Immunogen INC
    Inventors: Ravi V. J. Chari, Walter A. Blättler
  • Patent number: RE43899
    Abstract: The present invention is based on the discovery that the administration of at least one immunoconjugate and at least one chemotherapeutic agent provides an unexpectedly superior treatment for cancer. The present invention is directed to compositions comprising at least one immunoconjugate and at least one chemotherapeutic agent and to methods of treating cancer using at least one immunoconjugate and at least one chemotherapeutic agent. The present invention also provides methods of modulating the growth of selected cell populations, such as cancer cells, by administering a therapeutically effective amount of at least one chemotherapeutic agent and at least one immunoconjugate.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: January 1, 2013
    Assignee: Immunogen Inc.
    Inventors: Walter A. Blättler, Ravi V. J. Chari
  • Patent number: RE44704
    Abstract: The present invention is based on the discovery that the administration of at least one immunoconjugate and at least one chemotherapeutic agent provides an unexpectedly superior treatment for cancer. The present invention is directed to compositions comprising at least one immunoconjugate and at least one chemotherapeutic agent and to methods of treating cancer using at least one immunoconjugate and at least one chemotherapeutic agent. The present invention also provides methods of modulating the growth of selected cell populations, such as cancer cells, by administering a therapeutically effective amount of at least one chemotherapeutic agent and at least one immunoconjugate.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: January 14, 2014
    Assignee: Immunogen Inc.
    Inventors: Ravi V. J. Chari, Walter A. Blättler