Patents Assigned to Pharmasset, Inc.
  • Patent number: 8735345
    Abstract: Embodiments disclosed in the present application relate to a composition that can include a hepatitis C viral polymerase inhibitor, or pharmaceutically acceptable salt or prodrug thereof and a hepatitis C viral protease inhibitor, or pharmaceutically acceptable salt or prodrug thereof. Additional embodiments disclosed relate to methods for treating a disease condition such as a hepatitis C virus infection, liver fibrosis and/or impaired liver function with a hepatitis C viral polymerase inhibitor, or pharmaceutically acceptable salt or prodrug thereof and a hepatitis C viral protease inhibitor, or pharmaceutically acceptable salt or prodrug thereof.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: May 27, 2014
    Assignees: Hoffmann la Roche Inc., Pharmasset, Inc., Roche Palo Alto LLC
    Inventors: Steven B. Porter, Williamson Ziegler Bradford, Patrick F. Smith, Ellen S. Yetzer, Abel De La Rosa, Michael D. Rogers, William T. Symonds
  • Publication number: 20120232029
    Abstract: Embodiments of the invention are to compounds, methods, and compositions for use in the treatment of viral infections. More specifically embodiments of the invention are 2?,4?-substituted nucleoside compounds useful for the treatment of viral infections, such as HIV, HCV, and HBV infections.
    Type: Application
    Filed: December 13, 2011
    Publication date: September 13, 2012
    Applicant: Pharmasset, Inc.
    Inventors: MICHAEL JOSEPH SOFIA, Jinfa Du
  • Publication number: 20120202794
    Abstract: Disclosed herein are compounds useful for treating a viral infection, such as HCV.
    Type: Application
    Filed: January 19, 2012
    Publication date: August 9, 2012
    Applicant: PHARMASSET, INC.
    Inventors: MICHAEL JOSEPH SOFIA, RAMESH KAKARLA, JIAN LIU, DEVAN NADUTHAMBI, RALPH MOSLEY, HOLLY MICOLOCHICK STEUER
  • Publication number: 20120202766
    Abstract: The present invention is directed to a method and composition of treating or preventing viral infections, in particular, human immunodeficiency virus (HIV) and hepatitis B virus (HBV) infections, in human patients or other animal hosts, comprising the administration of N.sup.4-acyl-2?,3?-dideoxy-5-fluorocytidine or N.sup.4-acyl-2?,3?-didehyd-ro-2?,3?-dideoxy-5-fluorocytidine, and pharmaceutically acceptable salts, prodrugs, and other derivatives thereof.
    Type: Application
    Filed: February 13, 2012
    Publication date: August 9, 2012
    Applicant: Pharmasset, Inc.
    Inventors: Michael J. Otto, Junxing Shi, Kyoichi A. Watanabe
  • Publication number: 20120142626
    Abstract: Disclosed herein are 2?-spiro-nucleosides and derivatives thereof useful for treating a subject infected by hepatitis C virus or dengue virus.
    Type: Application
    Filed: November 30, 2011
    Publication date: June 7, 2012
    Applicant: Pharmasset, Inc.
    Inventors: JINFA DU, Michael Joseph Sofia
  • Publication number: 20120107278
    Abstract: Disclosed herein is a method for administering an abbreviated hepatitis C virus (HCV) treatment regimen for an HCV-infected, rs12979860 single nucleotide polymorphism (SNP) (C/C) patient, which comprises: administering to said patient an effective amount of each of a direct-acting antiviral, pegylated interferon alfa-2a, and ribavirin; wherein the abbreviated HCV treatment regimen is less than 48 weeks. Also disclosed herein is a method of detecting an rs12979860 single nucleotide polymorphism (SNP) in a hepatitis C virus (HCV) infected patient comprising: detecting the rs12979860 SNP of chromosome 19 in a biological sample from a patient, wherein an rs12979860 SNP C/C patient is administered an abbreviated treatment regimen with a direct-acting antiviral agent in combination with peginterferon alfa-2a and ribavirin; and wherein the abbreviated HCV treatment regimen is less than 48 weeks.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 3, 2012
    Applicant: Pharmasset, Inc.
    Inventors: MIRIAM MICHELLE BERREY, Peter Schaefer Price, JR., William T. Symonds
  • Patent number: 8114997
    Abstract: The present invention is directed to a method and composition of treating or preventing viral infections, in particular, human immunodeficiency virus (HIV) and hepatitis B virus (HBV) infections, in human patients or other animal hosts, comprising the administration of N.sup.4-acyl-2?,3?-dideoxy-5-fluorocytidine or N.sup.4-acyl-2?,3?-didehyd-ro-2?,3?-dideoxy-5-fluorocytidine, and pharmaceutically acceptable salts, prodrugs, and other derivatives thereof.
    Type: Grant
    Filed: January 4, 2008
    Date of Patent: February 14, 2012
    Assignee: Pharmasset, Inc.
    Inventors: Michael J. Otto, Junxing Shi, Kyoichi A. Watanabe
  • Patent number: 8093380
    Abstract: The disclosed invention is a bicyclo[4.2.1]nonane and its pharmaceutically acceptable salt or prodrug, and its composition and method of use to treat Flaviviridae (Hepacivirus, Flavivirus, and Pestivirus) infections in a host, including animals, and especially humans.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: January 10, 2012
    Assignee: Pharmasset, Inc.
    Inventors: Peiyuan Wang, Lieven J. Stuyver, Kyoichi A. Watanabe, Abdalla Hassan, Byoung-Kwon Chun, Laurent Hollecker
  • Publication number: 20110257122
    Abstract: Disclosed herein are phosphoramidate prodrugs of nucleoside derivatives for the treatment of viral infections in mammals, which is a compound, its stereoisomer, salt (acid or basic addition salt), hydrate, solvate, or crystalline form thereof, represented by the following structure: Also disclosed are methods of treatment, uses, and processes for preparing each of which utilize the compound represented by formula I.
    Type: Application
    Filed: May 3, 2011
    Publication date: October 20, 2011
    Applicant: Pharmasset, Inc.
    Inventors: Michael Joseph Sofia, Jinfa Du, Peiyuan Wang
  • Publication number: 20110257121
    Abstract: Disclosed herein is a compound represented by formula 1 or its hydrate thereof in crystalline or crystal-like form.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 20, 2011
    Applicant: PHARMASSET, INC.
    Inventors: WONSUK CHANG, DEVAN NADUTHAMBI, DHANAPALAN NAGARATHNAM, GANAPATI REDDY PAMULAPATI, BRUCE S. ROSS, MICHAEL JOSEPH SOFIA, HAI-REN ZHANG
  • Publication number: 20110251152
    Abstract: Disclosed herein are nucleoside phosphoramidates and their use as agents for treating viral diseases. These compounds are inhibitors of RNA-dependent RNA viral replication and are useful as inhibitors of HCV NS5B polymerase, as inhibitors of HCV replication and for treatment of hepatitis C infection in mammals.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 13, 2011
    Applicant: PHARMASSET, INC.
    Inventors: Bruce S. Ross, Michael Joseph Sofia, Ganapati Reddy Pamulapati, Suguna Rachakonda, Hai-Ren Zhang, Byoung-Kwon Chun, Peiyuan Wang
  • Publication number: 20110245484
    Abstract: Disclosed herein are phosphorus-containing actives, their use as actives for treating diseases, and a stereoselective process for preparing the same. Also disclosed herein are useful synthetic intermediates and processes for preparing the same.
    Type: Application
    Filed: March 31, 2011
    Publication date: October 6, 2011
    Applicant: PHARMASSET, INC.
    Inventors: BRUCE S. ROSS, MICHAEL JOSEPH SOFIA, GANAPATI REDDY PAMULAPATI, SUGUNA RACHAKONDA, HAI-REN ZHANG
  • Patent number: 7964580
    Abstract: Disclosed herein are phosphoramidate prodrugs of nucleoside derivatives for the treatment of viral infections in mammals, which is a compound, its stereoisomer, salt (acid or basic addition salt), hydrate, solvate, or crystalline form thereof, represented by the following structure: Also disclosed are methods of treatment, uses, and processes for preparing each of which utilize the compound represented by formula I.
    Type: Grant
    Filed: March 21, 2008
    Date of Patent: June 21, 2011
    Assignee: Pharmasset, Inc.
    Inventors: Michael Joseph Sofia, Jinfa Du, Peiyuan Wang
  • Patent number: 7919247
    Abstract: A process for assessing mitochondrial toxicity of a compound that includes contacting nucleic acids from a host with an amplification reaction mixture that contains at least two primers that provide detectable signals, wherein: a first primer provides a first detectable signal upon amplification of a host mitochondrial nucleic acid; a second primer provides a second detectable signal upon amplification of a host nuclear nucleic acid; and comparing the first and second detectable signals.
    Type: Grant
    Filed: December 3, 2007
    Date of Patent: April 5, 2011
    Assignee: Pharmasset, Inc.
    Inventors: Lieven Stuyver, Michael J. Otto
  • Publication number: 20110038833
    Abstract: The disclosed invention provides compositions and methods of treating a Flaviviridae infection, including hepatitis C virus, West Nile Virus, yellow fever virus, and a rhinovirus infection in a host, including animals, and especially humans, using a (2?R)-2?-deoxy-2?-fluoro-2?-C-methyl nucleosides, or a pharmaceutically acceptable salt or prodrug thereof.
    Type: Application
    Filed: September 9, 2010
    Publication date: February 17, 2011
    Applicant: PHARMASSET, INC.
    Inventor: Jeremy Clark
  • Publication number: 20110021454
    Abstract: Compounds, methods and compositions for treating a host infected with human immunodeficiency virus and hepatitis B virus comprising administering an effective amount of a described 4?-C-substituted ?-D- and ?-L-nucleoside or a pharmaceutically acceptable salt or prodrug thereof, are provided.
    Type: Application
    Filed: September 26, 2006
    Publication date: January 27, 2011
    Applicant: Pharmasset, Inc.
    Inventors: Jinfa Du, Phillip Furman, Michael Joseph Sofia
  • Publication number: 20110015146
    Abstract: A nucleoside compound having activity against hepatitis C virus is disclosed.
    Type: Application
    Filed: December 23, 2009
    Publication date: January 20, 2011
    Applicant: PHARMASSET, INC.
    Inventors: MICHAEL JOSEPH SOFIA, Jinfa Du, Peiyuan Wang, Dhanapalan Nagarathnam
  • Publication number: 20100298257
    Abstract: Disclosed herein are nucleoside phosphoramidates and their use as agents for treating viral diseases. These compounds are inhibitors of RNA-dependent 5 RNA viral replication and are useful as inhibitors of HCV NS5B polymerase, as inhibitors of HCV replication and for treatment of hepatitis C infection in mammals.
    Type: Application
    Filed: May 20, 2010
    Publication date: November 25, 2010
    Applicant: PHARMASSET, INC.
    Inventors: BRUCE ROSS, MICHAEL JOSEPH SOFIA, GANAPATI REDDY PAMULAPATI, SUGUNA RACHAKONDA, HAI-REN ZHANG, BYOUNG-KWON CHUN, PEIYUAN WANG
  • Publication number: 20100286083
    Abstract: A purified compound having activity against hepatitis C virus is disclosed.
    Type: Application
    Filed: December 23, 2009
    Publication date: November 11, 2010
    Applicant: PHARMASSET, INC.
    Inventors: DONGHUI BAO, Wonsuk Chang, Dhanapalan Nagarathnam, Michael Joseph Sofia
  • Patent number: RE42015
    Abstract: The present invention is directed to a compound, method and composition of treating or preventing viral infections, in particular, human immunodeficiency virus (HIV) and hepatitis B virus (HBV) infections, in human patients or other animal hosts, comprising the administration of N4-acylcytosine-1,3-dioxolane and pharmaceutically acceptable salts, prodrugs, and other derivatives thereof.
    Type: Grant
    Filed: June 21, 2007
    Date of Patent: December 28, 2010
    Assignee: Pharmasset, Inc.
    Inventors: Kyoichi A. Watanabe, Junxing Shi, Michael J. Otto