Patents by Inventor Iontcho R. Vlahov

Iontcho R. Vlahov 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).

  • Publication number: 20220220085
    Abstract: This disclosure relates to processes for preparing compounds that are useful in the treatment of disease, such as cancer, in mammals. In particular, the invention described herein pertains to processes for preparing compounds capable of targeting PSMA expressing cells and useful in the treatment of diseases caused by PSMA expressing cells, such as prostate cancer.
    Type: Application
    Filed: May 19, 2020
    Publication date: July 14, 2022
    Inventors: Iontcho R. VLAHOV, Hari Krishna R. SANTHAPURAM, Albert E. FELTEN, Christopher P. LEAMON, Daniel S. RENO, Katheryn M. STANFORD
  • Publication number: 20220125958
    Abstract: Described herein are compounds, compositions, and methods for diagnosing and/or monitoring pathogenic disease using positron emission tomography. Also described are conjugates of the formula B-L-P, wherein B is a radical of a targeting agent selected from vitamin receptor binding ligands (such as folate), PSMA binding ligands, or PSMA inhibitors; L is a divalent linker comprising aspartic acid, lysine, or arginine, and P is a radical of an imaging agent or radiotherapy agent, such as a radionuclide or radionuclide containing group, or a radical of a compound capable of binding a radionuclide, such as a metal chelating group.
    Type: Application
    Filed: September 29, 2021
    Publication date: April 28, 2022
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Philip S. LOW, Garth L. PARHAM, Quinshou CHEN
  • Publication number: 20210061764
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: April 17, 2020
    Publication date: March 4, 2021
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Patent number: 10898596
    Abstract: The invention described herein relates to conjugates and compositions for imaging, diagnosing, and/or monitoring diseases using radionuclide-based imaging. In particular, the invention described herein relates to conjugates and compositions for imaging, diagnosing, and/or monitoring diseases using positron emission tomography.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: January 26, 2021
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Hari Krishna R. Santhapuram
  • Patent number: 10857234
    Abstract: The present disclosure relates to compositions and methods of carbonic anhydrase IX inhibitors. The present disclosure also relates to targeting conjugates of carbonic anhydrase IX inhibitors as therapeutics and imaging agents. The present disclosure also relates to the use of targeting conjugates of carbonic anhydrase IX inhibitors in imaging methods and cancer therapy.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: December 8, 2020
    Assignee: Endocyte Inc.
    Inventors: Christopher P. Leamon, Iontcho R. Vlahov, Jonathan M. Shillingford, Paul J. Kleindl
  • Patent number: 10647676
    Abstract: This invention pertains to bivalent linkers, and the synthesis and use thereof. In particular, this invention pertains to the synthesis and use of bivalent linkers in preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates. The present invention includes divalent linkers, which are alternatively referred to as bivalent linkers, that may be used to couple, link, bond, attach, or otherwise associate two or more chemical entities. This coupling, linking, attachment, or association may be used in the formation of conjugates of such chemical entities. Those chemical entities include targeting ligands and receptor-binding ligands, such as vitamins. Those chemical entities also include drugs for treating various diseases or disease states, and imaging and diagnostic agents for diagnosing, detecting, or otherwise monitoring various diseases or disease states.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: May 12, 2020
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20190300482
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 3, 2019
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20190275181
    Abstract: Described herein are compounds, compositions, and methods for diagnosing and/or monitoring pathogenic disease using positron emission tomography. Also described are conjugates of the formula B-L-P, wherein B is a radical of a targeting agent selected from vitamin receptor binding ligands (such as folate), PSMA binding ligands, or PSMA inhibitors; L is a divalent linker comprising aspartic acid, lysine, or arginine, and P is a radical of an imaging agent or radiotherapy agent, such as a radionuclide or radionuclide containing group, or a radical of a compound capable of binding a radionuclide, such as a metal chelating group.
    Type: Application
    Filed: October 10, 2018
    Publication date: September 12, 2019
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Philip S. LOW, Garth L. PARHAM, Quinshou CHEN
  • Publication number: 20190216934
    Abstract: The invention describes a vitamin receptor binding drug delivery conjugate, and preparations therefor. The drug delivery conjugate consists of a vitamin receptor binding moiety, a bivalent linker (L), and a drug. The vitamin receptor binding moiety includes vitamins, and vitamin receptor binding analogs and derivatives thereof, and the drug includes analogs and derivatives thereof. The vitamin receptor binding moiety is covalently linked to the bivalent linker, and the drug, or the analog or the derivative thereof, is covalently linked to the bivalent linker, wherein the bivalent linker (L) includes components such as spacer linkers, releasable linkers, and heteroatom linkers, and combinations thereof. Methods and pharmaceutical compositions for eliminating pathogenic cell populations using the drug delivery conjugate are also described.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 18, 2019
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Matthew A. PARKER, Stephen J. HOWARD, Hari Krishna R. SANTHAPURAM, Apparao SATYAM, Joseph A. REDDY
  • Publication number: 20190134236
    Abstract: The invention described herein relates to conjugates and compositions for imaging, diagnosing, and/or monitoring diseases using radionuclide-based imaging. In particular, the invention described herein relates to conjugates and compositions for imaging, diagnosing, and/or monitoring diseases using positron emission tomography.
    Type: Application
    Filed: December 21, 2018
    Publication date: May 9, 2019
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Hari Krishna R. Santhapuram
  • Publication number: 20190105399
    Abstract: The invention describes a vitamin receptor binding drug delivery conjugate, and preparations therefor. The drug delivery conjugate consists of a vitamin receptor binding moiety, a bivalent linker (L), and a drug. The vitamin receptor binding moiety includes vitamins, and vitamin receptor binding analogs and derivatives thereof, and the drug includes analogs and derivatives thereof. The vitamin receptor binding moiety is covalently linked to the bivalent linker, and the drug, or the analog or the derivative thereof, is covalently linked to the bivalent linker, wherein the bivalent linker (L) includes components such as spacer linkers, releasable linkers, and heteroatom linkers, and combinations thereof. Methods and pharmaceutical compositions for eliminating pathogenic cell populations using the drug delivery conjugate are also described.
    Type: Application
    Filed: March 26, 2018
    Publication date: April 11, 2019
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Matthew A. PARKER, Stephen J. HOWARD, Hari Krishna R. SANTHAPURAM, Apparao SATYAM, Joseph A. REDDY
  • Publication number: 20190100494
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 4, 2019
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20190083631
    Abstract: The present disclosure relates to compositions and methods of carbonic anhydrase IX inhibitors. The present disclosure also relates to targeting conjugates of carbonic anhydrase IX inhibitors as therapeutics and imaging agents. The present disclosure also relates to the use of targeting conjugates of carbonic anhydrase IX inhibitors in imaging methods and cancer therapy.
    Type: Application
    Filed: March 16, 2017
    Publication date: March 21, 2019
    Applicant: Endocyte, Inc.
    Inventors: Christopher P. LEAMON, Iontcho R. VLAHOV, Jonathan M. SHILLINGFORD, Paul J. KLEINDL
  • Patent number: 10188759
    Abstract: The invention described herein relates to conjugates and compositions for imaging, diagnosing, and/or monitoring diseases using radionuclide-based imaging. In particular, the invention described herein relates to conjugates and compositions for imaging, diagnosing, and/or monitoring diseases using positron emission tomography.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: January 29, 2019
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Hari Krishna R. Santhapuram
  • Patent number: 10010618
    Abstract: Described are methods, uses, and kits for utilizing a targeted ligand conjugate in combination with a thiol inhibitor or a system xc? inhibitor for the treatment of cancer or inflammation. Also described are in vitro assays utilizing a targeted ligand conjugate in combination with a thiol inhibitor or a system xc? inhibitor.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: July 3, 2018
    Assignee: Endocyte, Inc.
    Inventors: Nikki L. Parker, Christopher P. Leamon, Iontcho R. Vlahov
  • Publication number: 20170327537
    Abstract: Described herein are compounds, pharmaceutical compositions and methods for treating pathogenic cell populations. The compounds described herein include conjugates of tubulysins and vitamin receptor binding ligands. The conjugates also include a releasable bivalent linker.
    Type: Application
    Filed: January 30, 2017
    Publication date: November 16, 2017
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Kevin Yu WANG
  • Publication number: 20170320826
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: January 23, 2017
    Publication date: November 9, 2017
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Patent number: 9550734
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 24, 2017
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20160296630
    Abstract: Described are methods, uses, and kits for utilizing a targeted ligand conjugate in combination with a thiol inhibitor or a system xc? inhibitor for the treatment of cancer or inflammation. Also described are in vitro assays utilizing a targeted ligand conjugate in combination with a thiol inhibitor or a system xc? inhibitor.
    Type: Application
    Filed: November 24, 2015
    Publication date: October 13, 2016
    Inventors: Nikki L. Parker, Christopher P. Leamon, Iontcho R. Vlahov
  • Publication number: 20160287731
    Abstract: Described herein are compounds, compositions, and methods for diagnosing and/or monitoring pathogenic disease using positron emission tomography. Also described are conjugates of the formula B-L-P, wherein B is a radical of a targeting agent selected from vitamin receptor binding ligands (such as folate), PSMA binding ligands, or PSMA inhibitors; L is a divalent linker comprising aspartic acid, lysine, or arginine, and P is a radical of an imaging agent or radiotherapy agent, such as a radionuclide or radionuclide containing group, or a radical of a compound capable of binding a radionuclide, such as a metal chelating group.
    Type: Application
    Filed: November 13, 2014
    Publication date: October 6, 2016
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Philip S. LOW, Garth L PARHAM, Qingshou CHEN