Patents Assigned to Durect Corporation
  • Patent number: 10758623
    Abstract: The present disclosure generally provides complexes including a pharmaceutically active agent and a functionalized polymer, wherein the functionalized polymer includes repeat units, the repeat units including ionizable repeat units having at least one ionizable side group and/or ionizable end group, a plurality of the at least one ionizable groups forming non-covalent bonds with the pharmaceutically active agent. Polymers which may be used to form such complexes as well as methods of making and using the complexes and related compositions are also provided.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: September 1, 2020
    Assignee: DURECT CORPORATION
    Inventors: Michael Sekar, Felix Theeuwes, Keith E Branham, John Gibson, James Matriano, Whitney Moro, John Tipton, William Van Osdol, Su Il Yum
  • Patent number: 10682340
    Abstract: Pharmaceutical compositions comprising an active pharmaceutical ingredient, a high viscosity liquid carrier material, a hydrophobic solvent, and a hydrophilic solvent are disclosed. Also disclosed are methods of manufacturing and using the compositions. The compositions are suitable for use, e.g., as depot formulations.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 16, 2020
    Assignees: DURECT CORPORATION, SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Wilma Tamraz, Huey-Ching Su, WeiQi Lin, Kazuhito Yamada, Naoki Matsumoto, Sreenivasu Mudumba, Komei Okabe
  • Patent number: 10668011
    Abstract: Pharmaceutical compositions comprising an active pharmaceutical ingredient, a high viscosity liquid carrier material, a hydrophobic solvent, and a hydrophilic solvent are disclosed. Also disclosed are methods of manufacturing and using the compositions. The compositions are suitable for use, e.g., as depot formulations.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: June 2, 2020
    Assignees: DURECT CORPORATION, SANTEN PHARMACEUTICAL CO., LTD.
    Inventors: Wilma Tamraz, Huey-Ching Su, WeiQi Lin, Kazuhito Yamada, Naoki Matsumoto, Sreenivasu Mudumba, Komei Okabe
  • Publication number: 20200101073
    Abstract: Disclosed are formulations and related methods that comprise a non-polymeric, non-water soluble high viscosity liquid carrier material having a viscosity of at least 5,000 cP at 37° C. that does not crystallize neat under ambient or physiological conditions; a specified linear polymer comprising lactide repeat units; and one or more solvents that have a solvent capacity.
    Type: Application
    Filed: September 3, 2019
    Publication date: April 2, 2020
    Applicant: DURECT CORPORATION
    Inventors: Jeremy C. Wright, Felix Theeuwes, John W. Gibson, Keith E. Branham, Stefania Sjobeck
  • Publication number: 20200101021
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Application
    Filed: September 3, 2019
    Publication date: April 2, 2020
    Applicant: DURECT CORPORATION
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot
  • Patent number: 10603312
    Abstract: The invention pertains to methods that include administering to a subject a transoral dosage form comprising a pharmaceutical carrier and sufentanil, and maintaining a mean pH ranging from about 3.5 to about 5.5 during a dosing period after administration of the transoral dosage form as determined using an in vitro donor media test. Related dosage forms are also disclosed. Also disclosed are transoral dosage forms and related methods, wherein a transoral dosage form may comprise: (1) about 5 to about 1000 micrograms of sufentanil; (2) about 50 micrograms to about 100 milligrams of naloxone; and (3) acidifying material in an amount sufficient to provide a mean pH ranging from about 3.5 to about 5.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: March 31, 2020
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Jaymin Shah, Sung Yun Kwon, Xiaoping Song
  • Publication number: 20200085829
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed.
    Type: Application
    Filed: August 19, 2019
    Publication date: March 19, 2020
    Applicant: DURECT CORPORATION
    Inventors: Jeremy C. WRIGHT, Wilma TAMRAZ, John J. LEONARD, John W. GIBSON, Keith E. BRANHAM, Stefania SJOBECK, Brooks BOYD, Christopher M. RUBINO
  • Patent number: 10471001
    Abstract: Methods and compositions for systemically or locally administering by implantation a beneficial agent to a subject are described, and include, for example, depot gel compositions that can be injected into a desired location and which can provide controlled release of a beneficial agent over a short duration of time. The compositions include a low molecular weight biocompatible polymer, a biocompatible solvent having low water miscibility that forms a viscous gel with the polymer and limits water uptake by the implant, and a beneficial agent.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: November 12, 2019
    Assignee: Durect Corporation
    Inventors: Guohua Chen, David T. Priebe
  • Patent number: 10471002
    Abstract: Methods and compositions for systemically or locally administering by implantation a beneficial agent to a subject are described, and include, for example, depot gel compositions that can be injected into a desired location and which can provide controlled release of a beneficial agent over a short duration of time. The compositions include a low molecular weight biocompatible polymer, a biocompatible solvent having low water miscibility that forms a viscous gel with the polymer and limits water uptake by the implant, and a beneficial agent.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: November 12, 2019
    Assignee: Durect Corporation
    Inventors: Guohua Chen, David T. Priebe
  • Publication number: 20190255179
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed. For instance, a carrier formulation for controlled release of injectable drugs is disclosed. The formulation may include a non-water soluble high viscosity liquid which may be sucrose acetate isobutyrate, a lactic-acid based polymer which may be a poly(lactic acid)(glycolic acid), and an organic solvent which maintains the composition in a monophasic form at 25° C. in one atmosphere. Drug in the formulation may be released upon administration such that less than 10% (e.g. 2-8%) of drug is released in the first 5 hours; 10% to 80% of the drug is released during a period of 5 hours to 7 days after administration; and 10% to 40% of the drug is released gradually over a period of 7 days to 28 days from initial administration. The drug may be an anti-schizophrenia agent delivered by injection.
    Type: Application
    Filed: January 17, 2019
    Publication date: August 22, 2019
    Applicant: DURECT CORPORATION
    Inventors: Jeremy C. WRIGHT, Wilma TAMRAZ, John J. LEONARD, John W. GIBSON, Keith E. BRANHAM, Stefania SJOBECK, Brooks Boyd, Christopher M. RUBINO
  • Publication number: 20190231678
    Abstract: A composition includes a salt; a polymer; and an antioxidant. A dispenser includes a flexible container having a closed end and an opposed open end; an osmotically-effective solute composition encapsulating at least a portion of the container, the solute composition including antioxidant in an amount of at least 0.5 wt %, based on weight of the solute composition; a semipermeable membrane encapsulating the osmotically-effective solute composition; a cap having a sealing surface adapted for sealing engagement with the open end of the container; and a port extending from an interior of the container and through the cap. Also disclosed are methods of making and using the composition and osmotic pumps.
    Type: Application
    Filed: December 18, 2018
    Publication date: August 1, 2019
    Applicant: Durect Corporation
    Inventors: Xiaoping Song, Clarisa Peer, Su Il Yum
  • Publication number: 20190209654
    Abstract: The present disclosure provides a biodegradable drug delivery composition including a vehicle and an insoluble component comprising beneficial agent dispersed in the vehicle. Typically, the composition is not an emulsion, but has a low viscosity and further provides for minimized initial burst and sustained release of the beneficial agent over time. Also provided, are kits including the biodegradable drug delivery composition or components thereof, as well as methods of making and using the biodegradable drug delivery composition.
    Type: Application
    Filed: November 2, 2018
    Publication date: July 11, 2019
    Applicant: Durect Corporation
    Inventors: William Van Osdol, SuIl Yum, Felix Theeuwes, Michael Sekar, John W Gibson, Keith Edward Branham, Huey Ching Su
  • Patent number: 10328068
    Abstract: Controlled release oral dosage forms suitable for administration of methylphenidate are provided. Abuse-resistant controlled release oral dosage forms suitable for administration of methylphenidate are also provided. Methods of treating ADD and ADHD using the oral dosage forms are also provided.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: June 25, 2019
    Assignee: Durect Corporation
    Inventors: Jan J. Scicinski, William W. van Osdol, Huey-Ching Su, Michael H. Arenberg, Jaymin Shah
  • Publication number: 20190167801
    Abstract: An injectable, nonaqueous suspension including at least one therapeutic agent suspended in a single component vehicle. The single component vehicle is a single amphiphilic material, such as a polyethoxylated castor oil or derivative thereof, a polyoxyethylene alkyl ether, a polyoxyethylene sorbitan fatty acid ester, a polyoxyethylene stearate, a block copolymer of polyethylene oxide-polypropylene oxide-polyethylene oxide, a block copolymer of polypropylene oxide-polyethylene oxide-polypropylene oxide, a tetra-functional block copolymer of polyethylene oxide-polypropylene oxide, or a tetra-functional block copolymer of polypropylene oxide-polyethylene oxide. A dosage kit that includes the injectable, nonaqueous suspension and a method of administering the injectable, nonaqueous suspension are also disclosed.
    Type: Application
    Filed: October 29, 2018
    Publication date: June 6, 2019
    Applicant: Durect Corporation
    Inventors: Paul R. Houston, Guohua Chen, Andrew Sheung-King Luk
  • Patent number: 10300142
    Abstract: The present disclosure provides compositions (e.g., extended release compositions) which exhibit a desirable pharmacokinetic profile of an active agent while providing reduced dissolution sample variability, e.g., in the form of reduced inter-capsule variability and/or a reduction in storage-time dependent change in mean release of the active agent from the composition. Related methods of making and administering the disclosed compositions are also provided.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: May 28, 2019
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael S. Zamloot, Karl Bratin, Ravi M. Shanker
  • Patent number: 10272097
    Abstract: Methods of preventing and/or treating ischemia, organ dysfunction and/or organ failure, including multiple organ dysfunction syndrome (MODS), and necrosis and apoptosis associated with organ dysfunction/failure, are provided. For instance, the methods involve contacting organ(s) with an oxygenated cholesterol sulfate (OCS), e.g. 5-cholesten-3,25-diol, 3-sulfate (25HC3S). The organ(s) may be in vivo (e.g. in a patient that is treated with the OCS) or ex vivo (e.g. an organ that has been harvested from a donor and is to be transplanted).
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 30, 2019
    Assignees: Virginia Commonwealth University, Durect Corporation
    Inventors: Shunlin Ren, Felix Theeuwes, James E. Brown, WeiQi Lin
  • Patent number: 10226532
    Abstract: Compositions may include a pharmaceutical active agent, a high viscosity liquid carrier material (HVLCM), a lactic acid-based polymer, and an organic solvent. Related compositions and methods are also disclosed. For instance, a carrier formulation for controlled release of injectable drugs is disclosed. The formulation may include a non-water soluble high viscosity liquid which may be sucrose acetate isobutyrate, a lactic-acid based polymer which may be a poly(lactic acid)(glycolic acid), and an organic solvent which maintains the composition in a monophasic form at 25° C. in one atmosphere. Drug in the formulation may be released upon administration such that less than 10% (e.g. 2-8%) of drug is released in the first 5 hours; 10% to 80% of the drug is released during a period of 5 hours to 7 days after administration; and 10% to 40% of the drug is released gradually over a period of 7 days to 28 days from initial administration. The drug may be an anti-schizophrenia agent delivered by injection.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: March 12, 2019
    Assignee: DURECT CORPORATION
    Inventors: Jeremy C. Wright, Wilma Tamraz, John J. Leonard, John W. Gibson, Keith E. Branham, Stefania Sjobeck, Brooks Boyd, Christopher M. Rubino
  • Patent number: 10206883
    Abstract: Abuse-resistant oral dosage forms suitable for administration of pharmacologically active agents are provided.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 19, 2019
    Assignee: Durect Corporation
    Inventors: Su Il Yum, Wendy Chao, Huey-Ching Su, Roger Fu, Michael Zamloot
  • Patent number: 10201496
    Abstract: Methods and compositions for systemically or locally administering by implantation a beneficial agent to a subject are described, and include, for example, depot gel compositions that can be injected into a desired location and which can provide controlled release of a beneficial agent over a short duration of time. The compositions include a low molecular weight biocompatible polymer, a biocompatible solvent having low water miscibility that forms a viscous gel with the polymer and limits water uptake by the implant, and a beneficial agent.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: February 12, 2019
    Assignee: Durect Corporation
    Inventors: Guohua Chen, David T. Priebe
  • Publication number: 20190030032
    Abstract: Disclosed are formulations and related methods that comprise a non-polymeric, non-water soluble high viscosity liquid carrier material having a viscosity of at least 5,000 cP at 37° C. that does not crystallize neat under ambient or physiological conditions; a specified linear polymer comprising lactide repeat units; and one or more solvents that have a solvent capacity.
    Type: Application
    Filed: June 25, 2018
    Publication date: January 31, 2019
    Applicant: DURECT CORPORATION
    Inventors: Jeremy C. WRIGHT, Felix THEEUWES, John W. GIBSON, Keith E. BRANHAM, Stefania SJOBECK