Patents Assigned to XenoPort, Inc.
  • Publication number: 20180273500
    Abstract: Improved methods of treating multiple sclerosis and/or psoriasis using prodrugs of methyl hydrogen fumarate are disclosed. The methods comprise administering certain prodrugs of methyl hydrogen fumarate. The methods are able to achieve high blood plasma concentrations of the active metabolite, methyl hydrogen fumarate, without causing significant gastrointestinal irritation. New prodrugs of methyl hydrogen fumarate are also disclosed.
    Type: Application
    Filed: May 31, 2018
    Publication date: September 27, 2018
    Applicant: XenoPort, Inc.
    Inventors: Peter A. Virsik, David J. Wustrow, Thamil Annamalai, Suresh K. Manthati
  • Patent number: 10071068
    Abstract: Sustained release oral dosage forms of an R-baclofen prodrug are disclosed.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: September 11, 2018
    Assignee: XENOPORT, INC.
    Inventors: David E. Edgren, David J. Kidney, Nikhil Pargaonkar, Derrick K. Kim, Gorm Yoder, Sarni Karaborni
  • Publication number: 20180237405
    Abstract: Improved methods of treating multiple sclerosis and/or psoriasis using prodrugs of methyl hydrogen fumarate are disclosed. The methods comprise administering certain prodrugs of methyl hydrogen fumarate. The methods are able to achieve high blood plasma concentrations of the active metabolite, methyl hydrogen fumarate, without causing significant gastrointestinal irritation. New prodrugs of methyl hydrogen fumarate are also disclosed.
    Type: Application
    Filed: April 19, 2018
    Publication date: August 23, 2018
    Applicant: XenoPort, Inc.
    Inventors: Peter A. Virsik, David J. Wustrow, Thamil Annamalai, Suresh K. Manthati
  • Patent number: 9999672
    Abstract: Pharmaceutical compositions and dosage forms of (N,N-diethylcarbamoyl)methyl methyl (2E)but-2-ene-1,4-dioate and/or methyl 4-morpholin-4-ylbutyl (2E)but-2-ene-1,4-dioate, containing low levels of certain impurities are disclosed.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: June 19, 2018
    Assignee: XENOPORT, INC.
    Inventors: Suresh Kumar Manthati, Sami Karaborni, Wei Chen
  • Patent number: 9949941
    Abstract: Sustained release oral dosage forms of a gabapentin prodrug, 1-{[(?-isobutanoyloxyethoxy)carbonyl]aminomethyl}-1-cyclohexane acetic acid, are disclosed. The dosage forms are useful for treating or preventing diseases and disorders for which gabapentin is therapeutically effective.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 24, 2018
    Assignee: XENOPORT, INC.
    Inventors: Kenneth C. Cundy, Srikonda Sastry, Manshiu Leung, Balaji V. Kadri, Paul E. Stach
  • Patent number: 9944592
    Abstract: The disclosures herein relate generally to acyloxyalkyl carbamate prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof, pharmaceutical compositions thereof, methods of making prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof, methods of using prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof, and pharmaceutical compositions thereof for treating or preventing common diseases and/or disorders such as spasticity and/or acid reflux disease. The disclosures herein also relate to acyloxyalkyl carbamate prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof which are suitable for oral administration and to sustained release oral dosage forms thereof.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: April 17, 2018
    Assignee: XENOPORT, INC.
    Inventors: Mark A. Gallop, Fenmei Yao, Maria J. Ludwikow, Thu Phan, Ge Peng
  • Patent number: 9895336
    Abstract: Disclosed herein are crystalline forms of (N,N-Diethylcarbamoyl)methyl methyl (2E)but-2-ene-1,4-dioate, which is a prodrug of methyl hydrogen fumarate. Crystalline form 1, Crystalline form 2, Crystalline 3, and Crystalline form 4 are disclosed.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: February 20, 2018
    Assignee: XENOPORT, INC.
    Inventors: Chen Mao, Randall A. Scheuerman, Sami Karaborni
  • Patent number: 9795581
    Abstract: Disclosed herein are crystalline forms of (N,N-Diethylcarbamoyl)methyl methyl (2E)but-2-ene-1,4-dioate, which is a prodrug of methyl hydrogen fumarate. Crystalline form 1, Crystalline form 2, Crystalline 3, and Crystalline form 4 are disclosed.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: October 24, 2017
    Assignee: XENOPORT, INC.
    Inventors: Chen Mao, Randall A. Scheuerman, Sami Karaborni
  • Publication number: 20170190657
    Abstract: The disclosures herein relate generally to acyloxyalkyl carbamate prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof, pharmaceutical compositions thereof, methods of making prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof, methods of using prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof, and pharmaceutical compositions thereof for treating or preventing common diseases and/or disorders such as spasticity and/or acid reflux disease. The disclosures herein also relate to acyloxyalkyl carbamate prodrugs of (±)-4-amino-3-(4-chlorophenyl)butanoic acid and analogs thereof which are suitable for oral administration and to sustained release oral dosage forms thereof.
    Type: Application
    Filed: December 22, 2016
    Publication date: July 6, 2017
    Applicant: XENOPORT, INC.
    Inventors: Mark A. Gallop, Fenmei Yao, Maria J. Ludwikow, Thu Phan, Ge Peng
  • Patent number: 9682057
    Abstract: Disclosed herein are crystalline forms of (N,N-Diethylcarbamoyl)methyl methyl (2E)but-2-ene-1,4-dioate, which is a prodrug of methyl hydrogen fumarate. Crystalline form 1, Crystalline form 2, Crystalline 3, and Crystalline form 4 are disclosed.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: June 20, 2017
    Assignee: XENOPORT, INC.
    Inventors: Chen Mao, Randall A. Scheuerman, Sami Karaborni
  • Publication number: 20170157056
    Abstract: Improved oral dosage forms of methyl hydrogen fumarate and prodrugs thereof are disclosed. Methods of treating diseases such as multiple sclerosis and psoriasis using such dosage forms are also disclose.
    Type: Application
    Filed: January 7, 2016
    Publication date: June 8, 2017
    Applicant: XENOPORT, INC.
    Inventors: Sami Karaborni, Sarina Grace Harris Ma, Chen Mao, Ching Wah Chong, Peter Robert Prinz Freed, Mesut Ciper, Stefanie Krenzlin, David J. Wustrow, Peter A. Virsik
  • Patent number: 9597292
    Abstract: Improved oral dosage forms of methyl hydrogen fumarate and prodrugs thereof are disclosed. Methods of treating diseases such as multiple sclerosis and psoriasis using such dosage forms are also disclosed.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: March 21, 2017
    Assignee: XenoPort, Inc.
    Inventors: Sami Karaborni, Sarina Grace Harris Ma, Chen Mao, Ching Wah Chong, Peter Robert Prinz Freed, Mesut Ciper, Stefanie Krenzlin, David J. Wustrow, Peter A. Virsik
  • Publication number: 20170042853
    Abstract: Disclosed herein are crystalline forms of (N,N-Diethylcarbamoyl)methyl methyl (2E)but-2-ene-1,4-dioate, which is a prodrug of methyl hydrogen fumarate. Crystalline form 1, Crystalline form 2, Crystalline 3, and Crystalline form 4 are disclosed.
    Type: Application
    Filed: July 20, 2016
    Publication date: February 16, 2017
    Applicant: XenoPort, Inc.
    Inventors: Chen Mao, Randall A. Scheuerman, Sami Karaborni
  • Patent number: 9533941
    Abstract: Methods of synthesizing a levodopa ester prodrug, salts thereof, and synthetic intermediates thereof are disclosed.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: January 3, 2017
    Assignee: XENOPORT, INC.
    Inventors: Stephen P. Raillard, Adam Mann, Suresh K. Manthati, Randall A. Scheuerman, Tono Estrada, Mark Q. Nguyen, Cindy X. Zhou
  • Patent number: 9452972
    Abstract: Prodrugs of methyl hydrogen fumarate, pharmaceutical compositions comprising prodrugs of methyl hydrogen fumarate, and methods of using prodrugs of methyl hydrogen fumarate and pharmaceutical compositions thereof for treating diseases such as psoriasis, asthma, multiple sclerosis, inflammatory bowel disease, and arthritis are disclosed.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: September 27, 2016
    Assignee: XenoPort, Inc.
    Inventors: Archana Gangakhedkar, Xuedong Dai, Noa Zerangue, Peter A. Virsik
  • Patent number: 9421182
    Abstract: Disclosed herein are cocrystals of dimethyl fumarate, which is a prodrug of methyl hydrogen fumarate.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: August 23, 2016
    Assignee: XenoPort, Inc.
    Inventors: Chen Mao, Scott L. Childs, Sami Karaborni
  • Patent number: 9416096
    Abstract: Disclosed herein are crystalline forms of (N,N-Diethylcarbamoyl)methyl methyl (2E)but-2-ene-1,4-dioate, which is a prodrug of methyl hydrogen fumarate. Crystalline form 1, Crystalline form 2, Crystalline 3, and Crystalline form 4 are disclosed.
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: August 16, 2016
    Assignee: XenoPort, Inc.
    Inventors: Chen Mao, Randall A. Scheuerman, Sami Karaborni
  • Patent number: 9353057
    Abstract: Methods for synthesis of 1-(acyloxy)-alkyl carbamates, particularly, the synthesis of 1-(acyloxy)-alkyl carbamate prodrugs of primary or secondary amine-containing drugs are described. Also described are methods for synthesis of 1-(acyloxy)-alkyl N-hydroxysuccinimidyl carbonates which are useful intermediates in the synthesis of 1-(acyloxy)-alkyl carbamates are also described.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: May 31, 2016
    Assignee: XenoPort, Inc.
    Inventors: Mark A. Gallop, Xuedong Dai, Randall A. Scheuerman, Stephen P. Raillard, Suresh K. Manthati, Fenmei Yao, Thu Phan, Maria Ludwikow, Ge Peng, Seema Bhat
  • Publication number: 20160113879
    Abstract: Improved oral dosage forms of methyl hydrogen fumarate and prodrugs thereof are disclosed. Methods of treating diseases such as multiple sclerosis and psoriasis using such dosage forms are also disclose.
    Type: Application
    Filed: January 7, 2016
    Publication date: April 28, 2016
    Applicant: XENOPORT, INC.
    Inventors: Sami Karaborni, Sarina Grace Harris Ma, Chen Mao, Ching Wah Chong, Peter Robert Prinz Freed, Mesut Ciper, Stefanie Krenzlin, David J. Wustrow, Peter A. Virsik
  • Patent number: 9302977
    Abstract: Methods of making monomethyl fumarate, which can then also be used in methods of making prodrugs of monomethyl fumarate, are disclosed. Monomethyl fumarate and prodrugs of monomethyl fumarate are useful for treating neurodegenerative, inflammatory, and autoimmune diseases including multiple sclerosis, psoriasis, irritable bowel disorder, ulcerative colitis, arthritis, chronic obstructive pulmonary disease, asthma, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: April 5, 2016
    Assignee: XenoPort, Inc.
    Inventors: Stephen P. Raillard, Randall A. Scheuerman, Suresh K. Manthati