Patents by Inventor Christopher M. Semko

Christopher M. Semko 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: 20140073788
    Abstract: Disclosed is a process for preparing polymer conjugates of agricultural, therapeutic, and food additive compounds using Mitsunobu conditions.
    Type: Application
    Filed: November 11, 2013
    Publication date: March 13, 2014
    Applicant: ELAN PHARMACEUTICALS, INC.
    Inventors: Andrei W. Konradi, Jenifer L. Smith, Michael S. Dappen, Christopher M. Semko
  • Patent number: 8569426
    Abstract: Disclosed is a process for preparing polymer conjugates of agricultural, therapeutic, and food additive compounds using Mitsunobu conditions.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: October 29, 2013
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Andrei W. Konradi, Jenifer L. Smith, Michael S. Dappen, Christopher M. Semko
  • Publication number: 20130018187
    Abstract: Disclosed is a process for preparing polymer conjugates of agricultural, therapeutic, and food additive compounds using Mitsunobu conditions.
    Type: Application
    Filed: September 18, 2012
    Publication date: January 17, 2013
    Applicant: ELAN PHARMACEUTICALS, INC.
    Inventors: Andrei W. Konradi, Jenifer L. Smith, Michael S. Dappen, Christopher M. Semko
  • Publication number: 20120329807
    Abstract: Disclosed are conjugates which bind VLA-4. Certain of these conjugates also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. Such conjugates are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis and myocardial ischemia. The conjugates can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Application
    Filed: September 7, 2012
    Publication date: December 27, 2012
    Applicant: ELAN PHARMACEUTICALS, INC.
    Inventors: Andrei Konradi, Michael A. Pleiss, Christopher M. Semko, Theodore Yednock, Jenifer L. Smith
  • Patent number: 8283358
    Abstract: The current invention provides compounds having a structure according to Formulae 1, 2, 3, and 4: wherein the A-ring, B-ring, C-ring, m, n, R25, R50, and R51 are as described in the specification. The invention also provides pharmaceutical compositions comprising compounds of Formulae 1, 2, 3, and 4, as well as methods of treating cognitive disorders, such as Alzheimer's disease. The invention further provides intermediates useful in preparing the compounds of Formulae 1, 2, 3, and 4.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: October 9, 2012
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Andrei W. Konradi, Xiaocong Michael Ye, Simeon Bowers, Albert W. Garofalo, Danielle L. Aubele, Darren Dressen, Raymond Ng, Gary Probst, Christopher M. Semko, Minghua Sun, Anh P. Truong, Michael S. Dappen
  • Patent number: 8268935
    Abstract: Disclosed is a process for preparing polymer conjugates of agricultural, therapeutic, and food additive compounds using Mitsunobu conditions.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: September 18, 2012
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Andrei W. Konradi, Jenifer L. Smith, Michael S. Dappen, Christopher M. Semko
  • Patent number: 8263063
    Abstract: Disclosed are conjugates exhibiting VLA-4 antagonistic properties. Certain of these conjugates also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. The conjugates of this invention are characterized as containing more than one VLA-4 inhibiting compound covalently attached to a bio-compatible polymer, such as polyethylene glycol. Conjugates of the invention are defined by formula I, wherein A, B, and q are described in the specification. Such conjugates are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis, and myocardial ischemia. The conjugates can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: September 11, 2012
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Andrei W. Konradi, Michael A. Pleiss, Christopher M. Semko, Theodore Yednock, Jenifer L. Smith
  • Patent number: 8030328
    Abstract: Disclosed are compounds of the formula: and the pharmaceutically acceptable salts thereof wherein the variables A, n, R5, R21-R24 and Q are defined herein. These compounds bind VLA-4. Certain of these compound also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. Such compounds are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis and myocardial ischemia. The compounds can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: October 4, 2011
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Frank Stappenbeck, Andrei Konradi, Jacek Jagodzinski, Christopher M. Semko, Ying-zi Xu, Jenifer L. Smith, Kassandra Rossiter
  • Publication number: 20110178119
    Abstract: The invention provides N-bicyclic sulfonamido compounds of Formula (I) wherein A is as described in the specification and R1 and R2 combine to form a [3.3.1] or a [3.2.1] ring system. Compounds of Formula I are useful in treating or preventing cognitive disorders, such as Alzheimer's Disease. The invention also encompasses pharmaceutical compositions comprising compounds of Formula (I) as well as methods of treating cognitive disorders, such as Alzheimer's disease.
    Type: Application
    Filed: August 18, 2006
    Publication date: July 21, 2011
    Applicant: ELAN PHARMACEUTICALS, INC.
    Inventors: Andrei W. Konradi, Matthew N. Mattson, Christopher M. Semko, Xiaocong Michael Ye
  • Publication number: 20110002876
    Abstract: Disclosed are conjugates which bind VLA-4. Certain of these conjugates also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. Such conjugates are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis and myocardial ischemia. The conjugates can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Application
    Filed: September 8, 2010
    Publication date: January 6, 2011
    Inventors: Andrei W. Konradi, Michael A. Pleiss, Christopher M. Semko, Theodore Yednock, Jenifer L. Smith
  • Publication number: 20110003802
    Abstract: The invention provides N-cyclic sulfonamido compounds and salts of Formula I: wherein A is as described in the specification and R1 and R2 combine to form a [3.3.1] or a [3.2.1] ring system, where the nitrogen is attached to the two bridgehead carbons, and the [3.3.1] or [3.2.1] ring systems are optionally fused with an heteroaryl or heterocycloalkyl ring. Compounds of Formula I are useful in treating or preventing cognitive disorders, such as Alzheimer's Disease. The invention also encompasses pharmaceutical compositions comprising compounds of Formula I, methods of treating cognitive disorders, such as Alzheimer's disease, and the intermediates useful in preparing the compounds of Formula I.
    Type: Application
    Filed: July 6, 2010
    Publication date: January 6, 2011
    Applicant: Elan Pharmaceuticals, Inc.
    Inventors: Simeon Bowers, Albert W. Garofalo, Roy K. Hom, Andrei W. Konradi, Matthew N. Mattson, Martin L. Neitzel, Christopher M. Semko, Anh P. Truong, Jing Wu, Ying-zi Xu
  • Publication number: 20100267747
    Abstract: The invention provides N-cyclic sulfonamido compounds of Formula I wherein A, B, R1, R1a, R2, R2a, R3 and R3a are as described in the specification. Compounds of Formula I are useful in treating or preventing cognitive disorders, such as Alzheimer's disease. The invention also encompasses pharmaceutical compositions comprising compounds of Formula I, methods of preparing compounds of formula I, and methods of treating cognitive disorders, such as Alzheimer's disease.
    Type: Application
    Filed: June 8, 2010
    Publication date: October 21, 2010
    Applicant: Elan Pharmaceuticals, Inc.
    Inventors: Xiaocong Michael Ye, Albert W. Garofalo, Jacek J. Jagodzinski, Andrei W. Konradi, Christopher M. Semko, Jenifer L. Smith, Ying-zi Xu
  • Patent number: 7794700
    Abstract: Disclosed are conjugates exhibiting VLA-4 antagonistic properties. Certain of these conjugates also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. The conjugates of this invention are characterized as containing more than one VLA-4 inhibiting compound covalently attached to a bio-compatible polymer, such as polyethylene glycol. Conjugates of the invention are defined by formula I, wherein A, B, and q are described in the specification. Such conjugates are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis, and myocardial ischemia. The conjugates can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: September 14, 2010
    Assignee: Elan Pharmaceuticals Inc.
    Inventors: Andrei Konradi, Michael A. Pleiss, Christopher M. Semko, Theodore Yednock, Jenifer L. Smith
  • Patent number: 7754712
    Abstract: The invention provides N-cyclic sulfonamido compounds and salts of Formula I: wherein A is as described in the specification and R1 and R2 combine to form a [3.3.1] or a [3.2.1] ring system, where the nitrogen is attached to the two bridgehead carbons, and the [3.3.1] or [3.2.1] ring systems are optionally fused with an heteroaryl or heterocycloalkyl ring. Compounds of Formula I are useful in treating or preventing cognitive disorders, such as Alzheimer's Disease. The invention also encompasses pharmaceutical compositions comprising compounds of Formula I, methods of treating cognitive disorders, such as Alzheimer's disease, and the intermediates useful in preparing the compounds of Formula I.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: July 13, 2010
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Simeon Bowers, Albert W. Garofalo, Roy K. Hom, Andrei W. Konradi, Matthew N. Mattson, Martin L. Neitzel, Christopher M. Semko, Anh P. Truong, Jing Wu, Ying-zi Xu
  • Patent number: 7745454
    Abstract: Disclosed are certain alpha amino acid compounds which bind VLA-4. Certain of these compounds also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. Such compounds are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis and myocardial ischemia. The compounds can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Grant
    Filed: September 7, 2004
    Date of Patent: June 29, 2010
    Assignees: Elan Pharmaceuticals, Inc., Wyeth
    Inventors: Andrei W. Konradi, Michael A. Pleiss, Eugene D. Thorsett, Susan Ashwell, Gregory S. Welmaker, Anthony Kreft, Dimitrios Sarantakis, Darren B. Dressen, Francine S. Farouz, Christopher M. Semko, Ying-Zi Xu
  • Patent number: 7732609
    Abstract: The invention provides N-cyclic sulfonamido compounds of Formula I wherein A, B, R1, R1a, R2, R2a, R3 and R3a are as described in the specification. Compounds of Formula I are useful in treating or preventing cognitive disorders, such as Alzheimer's disease. The invention also encompasses pharmaceutical compositions comprising compounds of Formula I, methods of preparing compounds of formula I, and methods of treating cognitive disorders, such as Alzheimer's disease.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: June 8, 2010
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Xiaocong Michael Ye, Albert W. Garofalo, Jacek J. Jagodinski, Andrei W. Konradi, Christopher M. Semko, Jenifer L. Smith, Ying-zi Xu
  • Publication number: 20100081680
    Abstract: The current invention provides compounds having a structure according to Formulae 1, 2, 3, and 4: wherein the A-ring, B-ring, C-ring, m, n, R25, R50, and R51 are as described in the specification. The invention also provides pharmaceutical compositions comprising compounds of Formulae 1, 2, 3, and 4, as well as methods of treating cognitive disorders, such as Alzheimer's disease. The invention further provides intermediates useful in preparing the compounds of Formulae 1, 2, 3, and 4.
    Type: Application
    Filed: September 4, 2009
    Publication date: April 1, 2010
    Inventors: Andrei W. Konradi, Xiaocong Michael Ye, Simeon Bowers, Albert W. Garofalo, Danielle L. Aubele, Darren Dressen, Raymond Ng, Gary Probst, Christopher M. Semko, Minghua Sun, Anh P. Truong, Michael S. Dappen
  • Patent number: 7595318
    Abstract: Disclosed are conjugates which bind VLA-4. Certain of these conjugates also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by VLA-4. Such conjugates are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis and myocardial ischemia. The conjugates can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: September 29, 2009
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Andrei Konradi, Michael A. Pleiss, Jenifer L. Smith, Christopher M. Semko, Chris Vandevert
  • Patent number: 7576101
    Abstract: The application provides for methods and compositions for inhibiting demyelination, promoting remyelination and/or treating paralysis in a subject in need thereof. Preferably, such compositions include immunoglobulins (e.g., antibodies, antibody fragments, and recombinantly produced antibodies or fragments), polypeptides (e.g., soluble forms of the ligand proteins for integrins) and small molecules, which when administered in an effective amount inhibits demyelination and/or promotes remyelination in a patient. The compositions and methods described herein can also utilize other anti-inflammatory agents used to palliate conditions and diseases associated with demyelination.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: August 18, 2009
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Stephen J. Karlik, Michael A. Pleiss, Andrei W. Konradi, Francine S. Farouz, Christopher M. Semko, Darren B. Dressen, Elizabeth Messersmith, Stephen Freedman, Ted Yednock
  • Patent number: 7427628
    Abstract: Disclosed are compounds which bind ?4 integrins, preferably VLA-4. Certain of these compounds also inhibit leukocyte adhesion and, in particular, leukocyte adhesion mediated by ?4 integrins, preferably VLA-4. Such compounds are useful in the treatment of inflammatory diseases in a mammalian patient, e.g., human, such as asthma, Alzheimer's disease, atherosclerosis, AIDS dementia, diabetes, inflammatory bowel disease, rheumatoid arthritis, tissue transplantation, tumor metastasis and myocardial ischemia. The compounds can also be administered for the treatment of inflammatory brain diseases such as multiple sclerosis.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: September 23, 2008
    Assignee: Elan Pharmaceuticals, Inc.
    Inventors: Andrei W. Konradi, Christopher M. Semko, Ying-zi Xu, Frank Stappenbeck, Brian P. Stupi, Jenifer Smith, Michael A. Pleiss, Eugene D. Thorsett