Patents by Inventor Thomas Knappe

Thomas Knappe 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: 12594345
    Abstract: The present invention relates to conjugates comprising crosslinked hyaluronic acid to which a plurality of drug moieties are covalently and reversibly conjugated, wherein the hyaluronic acid exhibits a certain degree of modification and comprises degradable crosslinked moieties. It also relates to their use as medicaments and their use in the diagnosis, prevention and treatment of diseases.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: April 7, 2026
    Assignee: ASCENDIS PHARMA A/S
    Inventors: Sebastian Stark, Burkhardt Laufer, Thomas Knappe, Tobias Voigt, Nicola Bisek
  • Patent number: 12565525
    Abstract: The present invention relates to IL-2 conjugates, a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising such IL-2 conjugate or a pharmaceutically acceptable salt thereof and their uses.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: March 3, 2026
    Assignee: ASCENDIS PHARMA ONCOLOGY DIVISION A/S
    Inventors: Kennett Sprogøe, Harald Rau, Thomas Knappe, Nicola Bisek, Burkhardt Laufer
  • Publication number: 20250387508
    Abstract: The present invention relates to hydrogel hyaluronic acid (HA) microspheres or pharmaceutically acceptable salts thereof that are prepared via suspension polymerization. Said hydrogel HA microspheres prepared according to the methods of the present invention may be used as carriers of various agents, such as carriers of various drug moieties. The present invention also provides for drug conjugates or pharmaceutically acceptable salts thereof that employ said hydrogel HA microspheres as carriers, methods of making said drug conjugates, pharmaceutical compositions comprising said drug conjugates and their use.
    Type: Application
    Filed: June 30, 2025
    Publication date: December 25, 2025
    Inventors: Sebastian Stark, Benjamin Breitenbach, Carsten Roessel, Dennis Sauer, Thomas Knappe, Tobias Voigt, Till Preuss
  • Publication number: 20250387503
    Abstract: The present invention relates to drug conjugates or pharmaceutically acceptable salts thereof comprising hyaluronic acid (HA) hydrogel microspheres, pharmaceutical compositions and methods of using such conjugates for treatment of ocular disorders, and methods of making the conjugates.
    Type: Application
    Filed: June 30, 2025
    Publication date: December 25, 2025
    Inventors: Burkhardt Laufer, Nicola Bisek, Thomas Knappe, Sebastian Stark, Meike Schnabel, Tobias Voigt, Till Preuss, David Alexander Fiebig, Dominik Barthelme
  • Publication number: 20250255973
    Abstract: The present invention relates to hydrogel prodrug compositions comprising cross-linked hyaluronic acid (HA), or a derivative or a salt thereof, wherein the cross-linker system comprises a biodegradable spacer, wherein the cross-linked HA comprises a conjugated drug-linker, and wherein the linker is capable of releasing the drug under physiological conditions. The present invention further relates to methods for preparing the hydrogel prodrug compositions. The present invention further relates to methods for treating an ocular condition using the hydrogel compositions.
    Type: Application
    Filed: January 23, 2025
    Publication date: August 14, 2025
    Inventors: Sebastian Stark, Thomas Knappe, Harald Rau, Nicola Bisek, Burkhardt Laufer, Samuel Weisbrod, Tobias Voigt
  • Patent number: 12246070
    Abstract: The present invention relates to hydrogel prodrug compositions comprising cross-linked hyaluronic acid (HA), or a derivative or a salt thereof, wherein the cross-linker system comprises a biodegradable spacer, wherein the cross-linked HA comprises a conjugated drug-linker, and wherein the linker is capable of releasing the drug under physiological conditions. The present invention further relates to methods for preparing the hydrogel prodrug compositions. The present invention further relates to methods for treating an ocular condition using the hydrogel compositions.
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: March 11, 2025
    Assignee: Ascendis Pharma A/S
    Inventors: Sebastian Stark, Thomas Knappe, Harald Rau, Nicola Bisek, Burkhardt Laufer, Samuel Weisbrod, Tobias Voigt
  • Publication number: 20230414770
    Abstract: The present invention relates to hydrogel prodrug compositions comprising cross-linked hyaluronic acid (HA), or a derivative or a salt thereof, wherein the cross-linker system comprises a biodegradable spacer, wherein the cross-linked HA comprises a conjugated drug-linker, and wherein the linker is capable of releasing the drug under physiological conditions. The present invention further relates to methods for preparing the hydrogel prodrug compositions. The present invention further relates to methods for treating an ocular condition using the hydrogel compositions.
    Type: Application
    Filed: March 27, 2023
    Publication date: December 28, 2023
    Inventors: Sebastian STARK, Thomas KNAPPE, Harald RAU, Nicola BISEK, Burkhardt LAUFER, Samuel WEISBROD, Tobias VOIGT
  • Publication number: 20230340055
    Abstract: The present invention relates to an IL-2 protein sequence of the formula (Tag1)y - (Ala)x - SEQA - SEQ B - SEQ C -(Tag2)z (I), wherein SEQ A has at least 89% sequence identity with SEQ ID NO:1; SEQ B has at least 76% sequence identity to SEQ ID NO:2 and comprises at least one glycosylation motif; SEQ C has at least 91% sequence identity with SEQ ID NO:4; Tag 1 and Tag2 are independently a tag moiety; Ala is an alanine residue; x is 0 or 1; y is 0 or 1; and z is 0 or 1; to conjugates thereof and their uses in the treatment of cell-proliferation disorders.
    Type: Application
    Filed: August 27, 2021
    Publication date: October 26, 2023
    Inventors: Sigurd OKKELS, David B. ROSEN, Burkhardt LAUFER, Thomas KNAPPE
  • Patent number: 11642415
    Abstract: The present invention relates to hydrogel prodrug compositions comprising cross-linked hyaluronic acid (HA), or a derivative or a salt thereof, wherein the cross-linker system comprises a biodegradable spacer, wherein the cross-linked HA comprises a conjugated drug-linker, and wherein the linker is capable of releasing the drug under physiological conditions. The present invention further relates to methods for preparing the hydrogel prodrug compositions. The present invention further relates to methods for treating an ocular condition using the hydrogel compositions.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: May 9, 2023
    Assignee: Ascendis Pharma A/S
    Inventors: Sebastian Stark, Thomas Knappe, Harald Rau, Nicola Bisek, Burkhardt Laufer, Samuel Weisbrod, Tobias Voigt
  • Patent number: 11633487
    Abstract: The present invention relates to novel prodrugs of primary or secondary amine- or hydroxyl-comprising biologically active moieties and pharmaceutically acceptable salts thereof, prodrug reagents, pharmaceutical compositions comprising these prodrugs and the use of these prodrugs. A disclosed prodrug may include a biologically active moiety reversibly and covalently linked to a specialized protective group; the linker may be reversible (i.e., hydrolytically cleavable in the absence of enzymes under physiological conditions) and, upon cleavage, may release a drug in its unmodified, pharmacologically active form.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: April 25, 2023
    Assignee: ASCENDIS PHARMA A/S
    Inventors: Nicola Bisek, Harald Rau, Felix Cleemann, Thomas Knappe, Romy Reimann
  • Publication number: 20230116809
    Abstract: The present invention relates to pharmaceutical compositions comprising hydrogel-linked prodrug for use in the treatment, prevention and/or diagnosis a condition of the eye and ophthalmic devices comprising said pharmaceutical compositions.
    Type: Application
    Filed: October 3, 2022
    Publication date: April 13, 2023
    Inventors: Thomas KNAPPE, Burkhardt Laufer, Harald Rau, Kennett Sprogøe, Tobias Voigt, Samuel Weisbrod
  • Publication number: 20220305136
    Abstract: The present invention relates to an anti-CTLA4 conjugate or a pharmaceutically acceptable salt thereof, wherein said conjugate comprises a plurality of anti-CTLA4 moieties -D covalently conjugated via at least one moiety -L1-L2- to a polymeric moiety Z, wherein -L1- is covalently and reversibly conjugated to -D and -L2- is covalently conjugated to Z and wherein -L1- is a linker moiety and -L2- is a chemical bond or a spacer moiety; and related aspects.
    Type: Application
    Filed: June 19, 2020
    Publication date: September 29, 2022
    Inventors: Thomas KNAPPE, Sebastian STARK, Burkhardt LAUFER, Sarah NOWAK, Roman KITYK, Nicolas ZYDZIAK
  • Publication number: 20210338834
    Abstract: The present invention relates to conjugates comprising crosslinked hyaluronic acid to which a plurality of drug moieties are covalently and reversibly conjugated, wherein the hyaluronic acid exhibits a certain degree of modification and comprises degradable crosslinked moieties. It also relates to their use as medicaments and their use in the diagnosis, prevention and treatment of diseases.
    Type: Application
    Filed: September 25, 2019
    Publication date: November 4, 2021
    Inventors: Sebastian STARK, Burkhardt LAUFER, Thomas KNAPPE, Tobias VOIGT, Nicola BISEK
  • Patent number: 11116849
    Abstract: The present invention relates to a process for the preparation of a hydrogel-linked prodrug releasing a tag moiety-biologically active moiety conjugate, to a hydrogel-linked prodrug releasing a tag moiety-bio logically active moiety conjugate obtainable by such process, to pharmaceutical compositions comprising said prodrug and their use as a medicament.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: September 14, 2021
    Assignee: Ascendis Pharma A/S
    Inventors: Harald Rau, Nora Kaluza, Ulrich Hersel, Thomas Knappe, Burkhardt Laufer
  • Publication number: 20210024602
    Abstract: The present invention relates to IL-2 conjugates, a pharmaceutically acceptable salt thereof, pharmaceutical compositions comprising such IL-2 conjugate or a pharmaceutically acceptable salt thereof and their uses.
    Type: Application
    Filed: March 27, 2019
    Publication date: January 28, 2021
    Applicant: Ascendis Pharma Oncology Division A/S
    Inventors: Kennett Sprogøe, Harald Rau, thomas Knappe, Nicola Bisek, Burkhardt Laifer
  • Publication number: 20200222547
    Abstract: The present invention relates to hydrogel prodrug compositions comprising cross-linked hyaluronic acid (HA), or a derivative or a salt thereof, wherein the cross-linker system comprises a biodegradable spacer, wherein the cross-linked HA comprises a conjugated drug-linker, and wherein the linker is capable of releasing the drug under physiological conditions. The present invention further relates to methods for preparing the hydrogel prodrug compositions. The present invention further relates to methods for treating an ocular condition using the hydrogel compositions.
    Type: Application
    Filed: September 19, 2019
    Publication date: July 16, 2020
    Applicant: Genentech, Inc.
    Inventors: Sebastian STARK, Thomas KNAPPE, Harald RAU, Nicola BISEK, Burkhardt LAUFER, Samuel WEISBROD, Tobias VOIGT, Germaine FUH, Patrick KOENIG, Chingwei Vivian LEE, Daniela BUMBACA YADAV
  • Patent number: 10653795
    Abstract: The present invention relates to a process for the preparation of a hydrogel-linked prodrug releasing a tag moiety-biologically active moiety conjugate, to a hydrogel-linked prodrug releasing a tag moiety-bio logically active moiety conjugate obtainable by such process, to pharmaceutical compositions comprising said prodrug and their use as a medicament.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: May 19, 2020
    Assignee: Ascendis Pharma A/S
    Inventors: Harald Rau, Nora Kaluza, Ulrich Hersel, Thomas Knappe, Burkhardt Laufer
  • Patent number: 10519226
    Abstract: The present invention relates to a pharmaceutical composition comprising one or more pharmaceutically acceptable excipient(s) and a VEGF neutralizing prodrug, which comprises a VEGF neutralizing biologically active moiety, for use in a method for the treatment of one or more ocular conditions.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: December 31, 2019
    Assignee: Ascendis Pharma Opthalmology Division A/S
    Inventors: Harald Rau, Thomas Knappe, Burkhardt Laufer, Romy Reimann, Samuel Weisbrod, Kennett Sprogøe, Nicola Bisek, Sebastian Stark, Tobias Voigt
  • Publication number: 20180312582
    Abstract: The present invention relates to compounds comprising a protecting group moiety-tag moiety conjugate, a method of purification and monoconjugates obtained from such method of purification.
    Type: Application
    Filed: July 3, 2018
    Publication date: November 1, 2018
    Applicant: Ascendis Pharma A/S
    Inventors: Harald Rau, Nicola Bisek, Thomas Knappe, Romy Reimann, Sebastian Stark, Samuel Weisbrod
  • Patent number: 10040850
    Abstract: The present invention relates to compounds comprising a protecting group moiety-tag moiety conjugate, a method of purification and monoconjugates obtained from such method of purification.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: August 7, 2018
    Assignee: Ascendis Pharma A/S
    Inventors: Harald Rau, Nicola Bisek, Thomas Knappe, Romy Reimann, Sebastian Stark, Samuel Weisbrod