Patents Assigned to Nektar Therapeutics
  • Patent number: 10695435
    Abstract: The present invention provides conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates. The conjugates as well as the polymeric reagents used to form the conjugates include at least one of each the following: an aromatic moiety comprising an ionizable hydrogen atom, a spacer moiety, and a water-soluble polymer. Methods of making polymeric reagents and conjugates, as well as methods for administering conjugates and compositions, are also provided.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: June 30, 2020
    Assignee: Nektar Therapeutics
    Inventors: Michael D. Bentley, Sean M. Culbertson, Samuel P. McManus
  • Patent number: 10682418
    Abstract: The invention relates to (among other things) polymer-sunitinib conjugates and related compounds. A compound of the invention, when administered by any of a number of administration routes, exhibits advantages over sunitinib in unconjugated form.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 16, 2020
    Assignee: Nektar Therapeutics
    Inventors: Sean M. Culbertson, Antoni Kozlowski, Tony Drew Vinson
  • Patent number: 10653689
    Abstract: The invention relates to (among other things) a method comprising the steps of (a) administering to a patient a PARP-inhibiting amount of a PARP inhibitor; and (b) administering to the patient a topoisomerase I-inhibiting amount of a long-acting topoisomerase I inhibitor.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: May 19, 2020
    Assignee: Nektar Therapeutics
    Inventors: Ute Hoch, Nancy Marie Burns, Deborah H. Charych
  • Patent number: 10646578
    Abstract: Polymeric reagents are provided comprising a moiety of atoms arranged in a specific order, wherein the moiety is positioned between a water-soluble polymer and a reactive group. The polymeric reagents are useful for, among other things, forming polymer-active agent conjugates. Related methods, compositions, preparations, and so forth are also provided.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: May 12, 2020
    Assignee: Nektar Therapeutics
    Inventors: J. Milton Harris, Antoni Kozlowski, Samuel P. McManus, Michael D. Bentley, Stephen A. Charles
  • Publication number: 20200129723
    Abstract: Apparatus (500) and components for coupling fluid or gas conducting elements, such as apparatus and components for connecting a nebulizer (501) with a gas flow system. In particular, the apparatus (500) and components are useful for connecting, in a gas-tight and quick release manner, a nebulizer (501) to a pressure-assisted breathing system, such as a mechanical ventilator or a continuous airway pressure (“CPAP”) system.
    Type: Application
    Filed: June 11, 2019
    Publication date: April 30, 2020
    Applicant: Nektar Therapeutics
    Inventors: James B. FINK, Gavan O'SULLIVAN, Paul DUNNE, Declan MORAN, John POWER, Niall SMITH
  • Patent number: 10525051
    Abstract: Provided herein are compounds and methods for achieving a sustained therapeutic effect of small molecule anti-cancer agents when administered in vivo.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: January 7, 2020
    Assignee: Nektar Therapeutics
    Inventors: Michael A. Eldon, Shibani S. Harite, Tamra L. Barker
  • Patent number: 10485877
    Abstract: The invention relates to (among other things) oligomer-phenothiazine conjugates and related compounds. A conjugate of the invention, when administered by any of a number of administration routes, exhibits advantages over un-conjugated phenothiazine compounds.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: November 26, 2019
    Assignee: Nektar Therapeutics
    Inventors: Xuyuan Gu, Jennifer Riggs-Sauthier
  • Patent number: 10463744
    Abstract: The invention relates to (among other things) polymer-semaxanib moiety conjugates and related compounds. A compound of the invention, when administered by any of a number of administration routes, exhibits advantages over the semaxanib moiety in unconjugated form.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: November 5, 2019
    Assignee: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Stephanie Allums-Donald, Sean M. Culbertson
  • Patent number: 10463659
    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: October 3, 2017
    Date of Patent: November 5, 2019
    Assignee: Nektar Therapeutics
    Inventors: Xuan Zhao, Michael D. Bentley, Zhongxu Ren, Tacey X. Viegas
  • Patent number: 10456476
    Abstract: The invention provides for preparing a polymer-active agent conjugate, the method comprising the steps of reacting an amino acid derivative with a biologically active agent under conditions to form a polymer-active agent conjugate.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: October 29, 2019
    Assignee: Nektar Therapeutics
    Inventor: Antoni Kozlowski
  • Patent number: 10434181
    Abstract: The invention relates to (among other things) oligomer-containing benzamide-based compound compounds. A compound of the invention exhibits one or more advantages over corresponding compounds lacking the oligomer.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: October 8, 2019
    Assignee: Nektar Therapeutics
    Inventors: Lin Cheng, Jennifer Riggs-Sauthier, Neel K. Anand
  • Patent number: 10421838
    Abstract: Methods for preparing active carbonate esters of water-soluble polymers are provided. Also provided are other methods related to the active carbonate esters of water-soluble polymers, as well as corresponding compositions.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: September 24, 2019
    Assignee: Nektar Therapeutics
    Inventors: Antoni Kozlowski, Jon McKannan, Samuel P. McManus
  • Patent number: 10407416
    Abstract: Provided are compounds of Formula I: and pharmaceutically acceptable salts and solvates thereof, wherein R1, R2, R3, R4, R5, and R6 are as described herein. The compounds of Formula I are agonists of the kappa opioid receptor and relate to and/or have application(s) in (among others) the fields of drug discovery, pharmacotherapy, physiology, organic chemistry and polymer chemistry.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: September 10, 2019
    Assignee: Nektar Therapeutics
    Inventors: Neel K. Anand, Franco J. Duarte, Wen Zhang, Zhongxu Ren
  • Patent number: 10385165
    Abstract: The invention is directed to multi-functional N-maleimidyl polymer derivatives comprising a water soluble and non-peptidic polymer backbone having a terminal carbon, such as a poly(alkylene glycol), the terminal carbon of the polymer backbone being directly bonded to the nitrogen atom of a N-maleimidyl moiety without a linking group therebetween. The invention also provides two methods of preparing such linkerless N-maleimidyl polymer derivatives.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: August 20, 2019
    Assignee: Nektar Therapeutics
    Inventor: Xiaoming Shen
  • Patent number: 10322107
    Abstract: Compounds and pharmaceutically acceptable salts and solvates thereof are described. The compounds relate to and/or have application(s) in (among others) the fields of drug discovery, pharmacotherapy, physiology and organic chemistry.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: June 18, 2019
    Assignee: Nektar Therapeutics
    Inventors: Franco J. Duarte, Neel K. Anand, Wen Zhang, Pankaj Sharma, Devendrapratap Singh
  • Patent number: 10307416
    Abstract: The invention provides compounds that are chemically modified by covalent attachment of a water-soluble oligomer. A compound of the invention, when administered by any of a number of administration routes, exhibits characteristics that are different from those of the compound not attached to the water-soluble oligomer.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: June 4, 2019
    Assignee: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Bo-Liang Deng, Timothy A. Riley
  • Patent number: 10265411
    Abstract: The invention relates to (among other things) N-optionally substituted aryl-2-oligomer-3-alkoxypropionamides and compositions comprising the same. A compound of the invention, when administered by any of a number of administration routes, exhibits one or more advantages over corresponding compounds lacking the oligomer.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: April 23, 2019
    Assignee: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Wen Zhang
  • Patent number: 10251881
    Abstract: Embodiments of the invention relate to particles of active substances, methods for preparing the particles, formulations containing the particles, and metered dose inhalers containing such particles or formulations. In one embodiment, a composition of an aerosol formulation is provided and contains a particulate active substance of non-micronized, solid particles having a mass median aerodynamic diameter of less than 10 ?m suspended in a hydrofluorocarbon fluid vehicle at a concentration within a range from about 0.2% w/v to about 5% w/v. The aerosol formulation exhibits a flocculation volume of about 85% or greater about 1 minute after mixing the particulate active substance and the hydrofluorocarbon fluid vehicle. The particulate active substance contains an alkaloid ergotamine, pharmaceutically acceptable salts thereof, analogues thereof, or derivatives thereof.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: April 9, 2019
    Assignee: Nektar Therapeutics
    Inventors: Andreas Kordikowski, Stephen Ernest Walker, Peter York
  • Patent number: 10251959
    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 a different 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: August 29, 2017
    Date of Patent: April 9, 2019
    Assignee: Nektar Therapeutics
    Inventors: Jennifer Riggs-Sauthier, Franco J. Duarte, Aaron S. Hammons
  • Patent number: 10232042
    Abstract: Conjugates of an anti-TNF antibody and one or more nonpeptidic water-soluble polymers are provided. Typically, the nonpeptidic water-soluble polymer is poly(ethylene glycol) or a derivative thereof. Also provided, among other things, are compositions comprising conjugates, methods of making conjugates, and methods of administering compositions to a patient.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: March 19, 2019
    Assignee: Nektar Therapeutics
    Inventors: Mary J. Bossard, Gayle Stephenson-Phillips