Patents by Inventor Mikhail Chafeev

Mikhail Chafeev 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: 8916580
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: December 23, 2014
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Yurevna Zenova, Qi Jia, Jean-Jacques Alexandre Cadieux, Simon J. Gauthier, Amy Frances Douglas, Tom Hsieh, Nagasree Chakka, Zoran Cikojevic
  • Publication number: 20140336390
    Abstract: This invention is directed to methods of preparing certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: May 7, 2014
    Publication date: November 13, 2014
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Alexandre Cadieux, Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Qi Ji, Stefanie Abel, Emad El-Sayed, Elke Huthmann, Thomas Isarno
  • Patent number: 8883840
    Abstract: This invention is directed to the (S)-enantiomer of the compound of formula (I): or a pharmaceutically acceptable solvate or prodrug thereof. This (S)-enantiomer is useful for the treatment of diseases or conditions, such as pain, which are ameliorated or alleviated by the modulation of voltage-gated sodium channels.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 11, 2014
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Jianmin Fu, Jean-Jacques Cadieux
  • Publication number: 20140296245
    Abstract: This invention is directed to benzensulfonamide compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: October 30, 2012
    Publication date: October 2, 2014
    Inventors: Shaoyi Sun, Alla Yurevna Zenova, Mikhail Chafeev, Qi Jia, Zaihui Zhang, Renata Marcella Oballa
  • Patent number: 8742109
    Abstract: This invention is directed to methods of preparing certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: June 3, 2014
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Cadieux, Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Qi Jia, Stefanie Abel, Emad El-Sayed, Elke Huthmann, Thomas Isarno
  • Publication number: 20130252962
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 26, 2013
    Inventors: Mikhail CHAFEEV, Sultan CHOWDHURY, Lauren FRASER, Jianmin FU, Jonathan LANGILLE, Shifeng LIU, Jianyu SUN, Shaoyi SUN, Serguei SVIRIDOV, Mark WOOD, Alla Yurevna ZENOVA, Qi JIA, Jean-Jacques Alexandre CADIEUX, Simon J. GAUTHIER, Amy Frances DOUGLAS, Tom HSIEH, Nagasree CHAKKA, Zoran CIKOJEVIC
  • Patent number: 8466188
    Abstract: This invention is directed to methods of using spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, for the treatment and/or prevention of hypercholesterolemia, benign prostatic hyperplasia, pruritis and cancer.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: June 18, 2013
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Rajender Kamboj, Duanjie Hou, Shifeng Liu, Mehran Seid Bagherzadeh, Serguei Sviridov, Shaoyi Sun, Jianyu Sun, Nagasree Chakka, Tom Hsieh, Vandna Raina
  • Patent number: 8450358
    Abstract: This invention is directed to the (S)-enantiomer of the compound of formula (I): or a pharmaceutically acceptable solvate or prodrug thereof. This (S)-enantiomer is useful for the treatment of diseases or conditions, such as pain, which are ameliorated or alleviated by the modulation of voltage-gated sodium channels.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: May 28, 2013
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Jianmin Fu, Jean-Jacques Cadieux
  • Patent number: 8445696
    Abstract: This invention is directed to methods of preparing certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: May 21, 2013
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Cadieux, Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Qi Jia, Stefanie Abel, Emad El-Sayed, Elke Huthmann, Thomas Isarno
  • Patent number: 8445694
    Abstract: Pharmaceutical compositions and compounds are provided. The compounds of the invention demonstrate anti-proliferative activity, and may promote apoptosis in cells lacking normal regulation of cell cycle and death. In one embodiment of the invention, pharmaceutical compositions of the compounds in combination with a physiologically acceptable carrier are provided. The pharmaceutical compositions are useful in the treatment of hyperproliferative disorders, which disorders include tumor growth, lymphoproliferative diseases, angiogenesis. The compounds of the invention are substituted pyrazoles and pyrazolines.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: May 21, 2013
    Assignee: Dermira (Canada), Inc.
    Inventors: Zaihui Zhang, Timothy S. Daynard, Mikhail A. Chafeev, Shisen Wang, Gregory B. Chopiuk, Serguei V. Sviridov
  • Patent number: 8415370
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: July 25, 2012
    Date of Patent: April 9, 2013
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Yurevna Zenova, Qi Jia, Jean-Jacques Cadieux, Simon J. Gauthier, Amy Frances Douglas, Tom Hsieh, Nagasree Chakka, Zoran Cikojevic
  • Publication number: 20130072537
    Abstract: This invention is directed to the (S)-enantiomer of the compound of formula (I): or a pharmaceutically acceptable solvate or prodrug thereof. This (S)-enantiomer is useful for the treatment of diseases or conditions, such as pain, which are ameliorated or alleviated by the modulation of voltage-gated sodium channels.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Mikhail Chafeev, Jianmin Fu, Jean-Jacques Cadieux
  • Publication number: 20130072686
    Abstract: This invention is directed to methods of preparing certain spiro-oxindole derivatives, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 21, 2013
    Applicant: XENON PHARMACEUTICALS INC.
    Inventors: Jean-Jacques Cadieux, Mikhail Chafeev, Sultan Chowdhury, Jianmin Fu, Qi Jia, Stefanie Abel, Emad El-Sayed, Elke Huthmann, Thomas Isarno
  • Publication number: 20120295897
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: July 25, 2012
    Publication date: November 22, 2012
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Yurevna Zenova, Qi Jia, Jean-Jacques Cadieux, Simon J. Gauthier, Amy Frances Douglas, Tom Hsieh, Nagasree Chakka, Zoran Cikojevic
  • Patent number: 8263606
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: September 11, 2012
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Zenova, Qi Jia, Jean-Jacques Cadieux, Simon J. Gauthier, Amy Frances Douglas, Tom Hsieh, Nagasree Chakka, Zoran Cikojevic
  • Publication number: 20120122909
    Abstract: This invention is directed to spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Application
    Filed: April 1, 2011
    Publication date: May 17, 2012
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Nagasree Chakka, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Duanjie Hou, Tom Hsieh, Rajender Kamboj, Shifeng Liu, Vandna Ralna, Mehran Seid Bagherzadeh, Jianyu Sun, Shaoyi Sun, Serguei Sviridov
  • Publication number: 20120035199
    Abstract: This invention is directed to spiroheterocyclic compounds of formula (I): wherein k, j, p, Q, R1, R3a, R3b, R3e, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, that are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of using the compounds are also disclosed.
    Type: Application
    Filed: August 12, 2010
    Publication date: February 9, 2012
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Rajender Kamboj, Shifeng Liu, Mehran Seid Bagherzadeh, Jianyu Sun, Serguei Sviridov
  • Patent number: 8106087
    Abstract: This invention is directed to spiro-oxindole compounds of formula (I): wherein k, j, Q, R1, R2a, R2b, R2c, R2d, R3a, R3b, R3c, and R3d are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, which are useful for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain. Pharmaceutical compositions comprising the compounds and methods of preparing and using the compounds are also disclosed.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: January 31, 2012
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Nagasree Chakka, Sultan Chowdhury, Robert Fraser, Jianmin Fu, Duanjie Hou, Tom Hsieh, Rajender Kamboj, Shifeng Liu, Vandna Raina, Mehran Seid Bagherzadeh, Jianyu Sun, Shaoyi Sun, Serguei Sviridov
  • Patent number: 8101647
    Abstract: This invention is directed to spiro-oxindole compounds, as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: January 24, 2012
    Assignee: Xenon Pharmaceuticals Inc.
    Inventors: Mikhail Chafeev, Sultan Chowdhury, Lauren Fraser, Jianmin Fu, Jonathan Langille, Shifeng Liu, Jianyu Sun, Shaoyi Sun, Serguei Sviridov, Mark Wood, Alla Zenova
  • Publication number: 20110269788
    Abstract: This invention is directed to spiro-oxindole compounds of formulas (I), (II), (III), as stereoisomers, enantiomers, tautomers thereof or mixtures thereof; or pharmaceutically acceptable salts, solvates or prodrugs thereof, for the treatment and/or prevention of sodium channel-mediated diseases or conditions, such as pain.
    Type: Application
    Filed: December 29, 2009
    Publication date: November 3, 2011
    Applicant: Xenon Pharmaceuticals Inc.
    Inventors: Jean-Jacques Cadieux, Mikhail Chafeev, Sultan Chowdhury, Amy Frances Douglas, Jianmin Fu, Jonathan Langille, Shaoyi Sun, Mark Wood