Patents by Inventor Tacey X. Viegas

Tacey X. Viegas 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: 20140045770
    Abstract: The invention provides small molecule drugs that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the small molecule drug not attached to the water-soluble oligomer.
    Type: Application
    Filed: October 16, 2013
    Publication date: February 13, 2014
    Applicant: NEKTAR THERAPEUTICS
    Inventors: Jennifer RIGGS-SAUTHIER, Lin Cheng, Tacey X. Viegas, Xuyuan Gu, Franco J. Duarte, Wen Zhang
  • Patent number: 8598364
    Abstract: The invention provides protease inhibitors that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the protease inhibitors not attached to the water-soluble oligomer.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: December 3, 2013
    Assignee: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Lin Cheng, Tacey X. Viegas, Xuyuan Gu, Franco J. Duarte, Wen Zhang
  • Patent number: 8580919
    Abstract: Conjugates of a GLP-1 moiety may be covalently attached to one or more water-soluble polymers. For instance, a GLP-1 polymer conjugate may include a GLP-1 moiety releasably attached at its N-terminus to a water-soluble polymer. The GLP-1 polymer conjugate may include a GLP-1 moiety covalently attached to a water-soluble polymer, wherein the GLP-1 moiety possesses an N-methyl substituent.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 12, 2013
    Assignee: Nektar Therapeutics
    Inventors: Mary J. Bossard, Zhihao Fang, Tacey X. Viegas, Stewart A. Thompson, Mei-chang Kuo
  • Publication number: 20130096258
    Abstract: Conjugates of a GLP-1 moiety may be covalently attached to one or more water-soluble polymers. For instance, a GLP-1 polymer conjugate may include a GLP-1 moiety releasably attached at its N-terminus to a water-soluble polymer. The GLP-1 polymer conjugate may include a GLP-1 moiety covalently attached to a water-soluble polymer, wherein the GLP-1 moiety possesses an N-methyl substituent.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 18, 2013
    Applicant: Nektar Therapeutics
    Inventors: Mary J. BOSSARD, Zhihao Fang, Tacey X. Viegas, Stewart A. Thompson, Mei-chang Kuo
  • Patent number: 8394365
    Abstract: Provided herein are water-soluble prodrugs, compositions comprising such prodrugs, and related methods of making and administering the same. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are typically covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water-soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 12, 2013
    Assignee: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael David Bentley, Zhongxu Ren, Tacey X. Viegas
  • Publication number: 20130053400
    Abstract: The invention provides antihistamine drugs that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the antihistamine drug not attached to the water-soluble oligomer.
    Type: Application
    Filed: September 7, 2012
    Publication date: February 28, 2013
    Applicant: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Wen Zhang, Tacey X. Viegas, Michael D. Bentley
  • Patent number: 8318145
    Abstract: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: November 27, 2012
    Assignee: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Patent number: 8293869
    Abstract: Conjugates of a GLP-I moiety may be covalently attached to one or more water-soluble polymers. For instance, a GLP-I polymer conjugate may include a GLP-I moiety releasably attached at its N-terminus to a water-soluble polymer. The GLP-I polymer conjugate may include a GLP-I moiety covalently attached to a water-soluble polymer, wherein the GLP-I moiety possesses an N-methyl substituent. The GLP-I polymer conjugate may include a GLP-I moiety covalently attached at a polymer attachment site to a water-soluble polymer, wherein the GLP-I moiety is glycosylated at a site separate from the polymer attachment site.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: October 23, 2012
    Assignee: Nektar Therapeutics
    Inventors: Mary J. Bossard, Zhihao Fang, Tacey X. Viegas, Stewart A. Thompson, Mei-chang Kuo
  • Patent number: 8263062
    Abstract: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Grant
    Filed: February 22, 2010
    Date of Patent: September 11, 2012
    Assignee: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Publication number: 20110269677
    Abstract: The invention provides protease inhibitors that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the protease inhibitors not attached to the water-soluble oligomer.
    Type: Application
    Filed: March 12, 2008
    Publication date: November 3, 2011
    Applicant: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Lin Cheng, Tacey X. Viegas, Xuyuan Gu, Franco J. Duarte, Wen Zhang
  • Patent number: 8034825
    Abstract: The invention provides small molecule drugs that are chemically modified by covalent attachment of a water-soluble oligomer obtained from a monodisperse or bimodal water-soluble oligomer composition. A conjugate of the invention, when administered by any of a number of administration routes, exhibits a reduced biological membrane crossing rate as compared to the biological membrane crossing rate of the small molecule drug not attached to the water-soluble oligomer.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: October 11, 2011
    Assignee: Nektar Therapeutics
    Inventors: Michael D. Bentley, Tacey X. Viegas, Richard R. Goodin, Lin Cheng, Xuan Zhao
  • Patent number: 7786133
    Abstract: The invention provides small molecule drugs that are chemically modified by covalent attachment of a water-soluble oligomer obtained from a monodisperse or bimodal water-soluble oligomer composition. A conjugate of the invention, when administered by any of a number of administration routes, exhibits a reduced biological membrane crossing rate as compared to the biological membrane crossing rate of the small molecule drug not attached to the water-soluble oligomer.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: August 31, 2010
    Assignee: Nektar Therapeutics
    Inventors: Michael D. Bentley, Tacey X. Viegas, Richard R. Goodin, Lin Cheng, Xuan Zhao
  • Publication number: 20100210505
    Abstract: Conjugates of a GLP-I moiety may be covalently attached to one or more water-soluble polymers. For instance, a GLP-I polymer conjugate may include a GLP-I moiety releasably attached at its N-terminus to a water-soluble polymer. The GLP-I polymer conjugate may include a GLP-I moiety covalently attached to a water-soluble polymer, wherein the GLP-I moiety possesses an N-methyl substituent. The GLP-I polymer conjugate may include a GLP-I moiety covalently attached at a polymer attachment site to a water-soluble polymer, wherein the GLP-I moiety is glycosylated at a site separate from the polymer attachment site.
    Type: Application
    Filed: December 18, 2006
    Publication date: August 19, 2010
    Applicants: Nektar Therapeutics AL, Corporation, Nektar Therapeutics
    Inventors: Mary J. Bossard, Zhihao Fang, Tacey X. Viegas, Stewart A. Thompson, Mei-chang Kuo
  • Publication number: 20100190933
    Abstract: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Application
    Filed: March 19, 2010
    Publication date: July 29, 2010
    Applicant: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Patent number: 7744861
    Abstract: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: June 29, 2010
    Assignee: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Publication number: 20100152201
    Abstract: The invention provides antihistamine drugs that are chemically modified by covalent attachment of a water-soluble oligomer. A conjugate of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from the characteristics of the antihistamine drug not attached to the water-soluble oligomer.
    Type: Application
    Filed: March 12, 2008
    Publication date: June 17, 2010
    Applicant: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Wen Zhang, Tacey X Viegas, Michael D Bentley
  • Publication number: 20100152414
    Abstract: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Application
    Filed: February 22, 2010
    Publication date: June 17, 2010
    Applicant: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Publication number: 20090074704
    Abstract: Provided herein are water-soluble prodrugs, compositions comprising such prodrugs, and related methods of making and administering the same. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are typically covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water-soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Application
    Filed: November 30, 2007
    Publication date: March 19, 2009
    Applicant: Nektar Therapeutics AL, Corporation
    Inventors: Xuan Zhao, Michael David Bentley, Zhongxu Ren, Tacey X. Viegas
  • Publication number: 20080194612
    Abstract: Provided herein are water-soluble prodrugs. The prodrugs of the invention comprise a water-soluble polymer having three or more arms, at least three of which are covalently attached to an active agent, e.g., a small molecule. The conjugates of the invention provide an optimal balance of polymer size and structure for achieving improved drug loading, since the conjugates of the invention possess three or more active agents releasably attached to a multi-armed water soluble polymer. The prodrugs of the invention are therapeutically effective, and exhibit improved properties in-vivo when compared to unmodified parent drug.
    Type: Application
    Filed: February 11, 2008
    Publication date: August 14, 2008
    Applicant: Nektar Therapeutics AL, Corporation
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Publication number: 20030143274
    Abstract: Balanced pH, hyperosmotic, hypoosmotic, or isoosmotic gels are ideal vehicles for drug delivery. They are especially suited for topical body cavity or injection application of drugs or diagnostic agents; for drug or diagnostic agent delivery to the eye of a mammal; as protective corneal shields; or as ablatable corneal masks useful in laser reprofiling of the cornea. The compositions without the addition of a drug or diagnostic agent are useful as medical devices, for instance, in separating surgically or otherwise injured tissue as a means of preventing adhesions.
    Type: Application
    Filed: September 4, 2002
    Publication date: July 31, 2003
    Inventors: Tacey X. Viegas, Lorraine E. Reeve, Raymond L. Henry