Patents by Inventor Rafi Ahmed

Rafi Ahmed 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: 9321829
    Abstract: Antibodies that specifically bind influenza virus hemagglutinin A (HA), and antigen binding fragments thereof are disclosed herein. In several embodiments, these antibodies are broadly neutralizing. Nucleic acids encoding these monoclonal antibodies, vectors including these nucleic acids, and host cells transformed with these vectors are also disclosed. Compositions are disclosed that include these antibodies, antigen binding fragments, nucleic acids, vectors and host cells. Method of using these antibodies, and antigen binding fragments, nucleic acids, vectors and host cells, such as for diagnosis and treatment of an influenza virus infection are also provided.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: April 26, 2016
    Assignee: Emory University
    Inventors: Rafi Ahmed, Jens Wrammert, Patrick C. Wilson
  • Publication number: 20150339349
    Abstract: A method and apparatus for outer-joined and/or cross-joined table elimination for duplicate-insignificant queries is provided. A query block of a query specifies a join between a first table and a second table. The join is one of an outer join and a cross join. A first determination is made that the query block contains no references to the second table to be processed after the join. A second determination is made that the query block is duplicate-insignificant. In response to making the first determination and the second determination, the query block is transformed into a transformed query, where the second table is eliminated from a corresponding query block in the transformed query.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 26, 2015
    Inventors: Rafi Ahmed, Gautam Kumar Parai
  • Publication number: 20150239972
    Abstract: PD-1 antagonists are disclosed that can be used to reduce the expression or activity of PD-1 in a subject. An immune response specific to an infectious agent or to tumor cells can be enhanced using these PD-1 antagonists in conjunction with an antigen from the infectious agent or tumor. Thus, subjects with infections, such as persistent infections can be treated using PD-1 antagonists. In addition, subjects with tumors can be treated using the PD-1 antagonists. In several examples, subjects can be treated by transplanting a therapeutically effective amount of activated T cells that recognize an antigen of interest and by administering a therapeutically effective amount of a PD-1 antagonist. Methods are also disclosed for determining the efficacy of a PD-1 antagonist in a subject administered the PD-1 antagonist. In some embodiments, these methods include measuring proliferation of memory B cells in a sample from a subject administered the PD-1 antagonist.
    Type: Application
    Filed: March 6, 2015
    Publication date: August 27, 2015
    Applicants: Emory University, Dana-Farber Cancer Institute, Inc.
    Inventors: Rafi Ahmed, Rama Amara, Gordon Freeman, Vijayakumar Velu, Kehmia Titanji
  • Publication number: 20150234888
    Abstract: Methods, stored instructions, and computer systems are described for selecting an OR-expansion state of a query. A query processor accesses a certain query and a control parameter. The certain query comprises disjunctive predicates, and the control parameter indicates a certain procedure of a plurality of alternative stored procedures for expanding queries comprising disjunctive predicates into semantically equivalent candidate queries comprising combinations of subqueries. Based at least in part on the control parameter, the query processor selects the certain procedure to expand the certain query into one or more certain semantically equivalent candidate queries, each comprising a different combination of two or more subqueries. The query processor causes cost-based evaluation of subject queries, including the certain query and the one or more certain semantically equivalent candidate queries.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 20, 2015
    Applicant: Oracle International Corporation
    Inventors: Rafi Ahmed, Nirav Vyas, Mohamed Zait
  • Patent number: 9102727
    Abstract: The present invention is based, in part, on the identification of novel human anti-PD-1, PD-L1, and PD-L2 antibodies. Accordingly, the invention relates to compositions and methods for diagnosing, prognosing, and treating conditions that would benefit from modulating PD-1, PD-L1, and/or PD-L2 activity (e.g., persistent infectious diseases, autoimmune diseases, asthma, transplant rejection, inflammatory disorders and tumors) using the novel human anti-PD-1, PD-L1, and PD-L2 antibodies described herein.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: August 11, 2015
    Assignees: EMORY UNIVERSITY, DANA-FARBER CANCER INSTITUTE, INC.
    Inventors: Gordon J. Freeman, Rafi Ahmed, Timothy D. Jones, Francis J. Carr, James P. Gregson
  • Publication number: 20140379690
    Abstract: A method, apparatus, and stored instructions are provided for transforming an initial query by eliminating a subquery nested within the initial query. The initial query may include an outer query that references a first instance of a particular data object. The initial query may also include set operator(s). At least a particular set operator may include a particular subquery that references a different instance of the particular data object. A query processor may transform the initial query to a transformed query that excludes the particular set operator and the particular subquery. The transformed query may instead include an added predicate that is based at least in part on the particular subquery. The added predicate may reference the first instance of the particular data object without referencing the different instance of the particular data object. The transformed query may be used for query execution instead of the initial query.
    Type: Application
    Filed: June 20, 2013
    Publication date: December 25, 2014
    Inventors: Rafi Ahmed, Mohamed Zait
  • Publication number: 20140348851
    Abstract: Antibodies that specifically bind influenza virus hemagglutinin A (HA), and antigen binding fragments thereof are disclosed herein. In several embodiments, these antibodies are broadly neutralizing. Nucleic acids encoding these monoclonal antibodies, vectors including these nucleic acids, and host cells transformed with these vectors are also disclosed. Compositions are disclosed that include these antibodies, antigen binding fragments, nucleic acids, vectors and host cells. Method of using these antibodies, and antigen binding fragments, nucleic acids, vectors and host cells, such as for diagnosis and treatment of an influenza virus infection are also provided.
    Type: Application
    Filed: October 18, 2012
    Publication date: November 27, 2014
    Applicants: THE UNIVERSITY OF CHICAGO, EMORY UNIVERSITY
    Inventors: Rafi Ahmed, Jens Wrammert, Patrick C. Wilson
  • Patent number: 8840899
    Abstract: It is disclosed herein that treatment of a subject with an mTOR inhibitor enhances antigen-specific T cell immune responses. Thus, provided herein is a method of enhancing an antigen-specific T cell response in a subject by administering to the subject a therapeutically effective amount of an mTOR inhibitor. The antigen can be any antigen, such as an antigen from a pathogen or a vaccine, or a tumor antigen. In some embodiments, the method further comprises administering to the subject a vaccine, such as a virus vaccine or a cancer vaccine. The mTOR inhibitor can be administered either before or after vaccination to enhance the quantity and quality of the T cell immune response and immunological memory. In some examples, the mTOR inhibitor is rapamycin or a rapamycin analog.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: September 23, 2014
    Assignee: Emory University
    Inventors: Rafi Ahmed, Christian P. Larsen, Koichi Araki
  • Publication number: 20140178370
    Abstract: The present invention provides methods and compositions for the treatment, prevention, or reduction of persistent infections, such as chronic infections, latent infections, and slow infections and cancer. The methods and compositions of the invention are also useful for the alleviation of one or more symptoms associated with such infections and cancer.
    Type: Application
    Filed: December 30, 2013
    Publication date: June 26, 2014
    Applicants: Emory University, President and Fellows of Harvard College, Brigham and Women's Hospital, Dana-Farber Cancer Institute, Inc.
    Inventors: Gordon Freeman, Arlene Sharpe, David M. Dorfman, Rafi Ahmed, Daniel Barber, E. John Wherry
  • Publication number: 20140067789
    Abstract: A method, apparatus, and stored instructions are provided for transforming a query representation by unnesting a predicate condition that is based on whether or not a result exists for a subquery of the predicate condition. An initial query representation is received. The initial query representation represents an initial query that includes an EXISTS-equivalent predicate or a NOT-EXISTS-equivalent predicate and at least one other predicate in a disjunction. The initial query representation is transformed into a semantically equivalent transformed query representation that represents a transformed query. The transformed query includes, instead of the EXISTS-equivalent predicate or a NOT-EXISTS-equivalent predicate, a join operator that references the data object.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 6, 2014
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventors: Rafi Ahmed, Chun-Chieh Lin, Mohamed Zait
  • Patent number: 8652465
    Abstract: The present invention provides methods and compositions for the treatment, prevention, or reduction of persistent infections, such as chronic infections, latent infections, and slow infections and cancer. The methods and compositions of the invention are also useful for the alleviation of one or more symptoms associated with such infections and cancer.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: February 18, 2014
    Assignees: Emory University, Dana-Farber Cancer Institute, Inc., Brigham and Women's Hospital, President and Fellows of Harvard College
    Inventors: Gordon Freeman, Arlene Sharpe, David M. Dorfman, Rafi Ahmed, Daniel Barber, E. John Wherry
  • Publication number: 20140046039
    Abstract: Antibodies or antibody fragments, wherein the antibody or the fragment binds HA domain of influenza virus (e.g. H1N1, H5N1, or both).
    Type: Application
    Filed: January 10, 2012
    Publication date: February 13, 2014
    Applicants: THE UNIVERSITY OF CHICAGO, EMORY UNIVERSITY
    Inventors: Rafi Ahmed, Jens Wrammert, Patrick C. Wilson
  • Publication number: 20130291136
    Abstract: The present invention is based, in part, on the identification of novel human anti-PD-1, PD-L1, and PD-L2 antibodies. Accordingly, the invention relates to compositions and methods for diagnosing, prognosing, and treating conditions that would benefit from modulating PD-1, PD-L1, and/or PD-L2 activity (e.g., persistent infectious diseases, autoimmune diseases, asthma, transplant rejection, inflammatory disorders and tumors) using the novel human anti-PD-1, PD-L1, and PD-L2 antibodies described herein.
    Type: Application
    Filed: March 13, 2013
    Publication date: October 31, 2013
    Inventors: Gordon J. FREEMAN, Rafi AHMED, Timothy D. JONES, Francis J. CARR, James P. GREGSON
  • Patent number: 8563305
    Abstract: High efficient methods for producing an antibody molecule that binds an antigen are described. The methods include obtaining a population of PBMC enriched for CD19highCD3negCD20low to negCD38highCD27high cells from a mammal exposed to an antigen from sample of cells enriched for PBMC. The cells are isolated from a sample obtained at a time that the fraction of PBMC expressing antibody reactive to the antigen is at a high level. Sequences encoding heavy and light chain variable domains are prepared in a manner that allow production of molecules with natural heavy and light chain pairing.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: October 22, 2013
    Assignees: Oklahoma Medical Research Foundation, Emory University
    Inventors: Rafi Ahmed, Joseph Miller, Patrick C. Wilson, J. Donald Capra, Jens Wrammert
  • Patent number: 8554761
    Abstract: Methods, computing devices, and computer-readable media are provided for transforming an initial query with a single-table outer join predicate to a second, semantically equivalent query that includes a multi-table predicate instead of the single-table outer join predicate. Because the second query does not include the single-table outer join predicate, the second query may be available for further transformations or optimization techniques, may produce a more efficient or otherwise different execution plan, or may be executed more efficiently or differently. The single-table outer join predicate may be in a full outer join ON clause of the initial query or nested in a left outer-joined LATERAL VIEW of the initial query. The multi-table predicate may be in a WHERE clause of the second query. Unlike the initial query, the second query allows use of a temporary organization of data from multiple tables for evaluation of multiple rows of the left outer join.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: October 8, 2013
    Assignee: Oracle International Corporation
    Inventor: Rafi Ahmed
  • Patent number: 8552154
    Abstract: The present invention is based, in part, on the identification of novel human anti-PD-1, PD-L1, and PD-L2 antibodies. Accordingly, the invention relates to compositions and methods for diagnosing, prognosing, and treating conditions that would benefit from modulating PD-1, PD-L1, and/or PD-L2 activity (e.g., persistent infectious diseases, autoimmune diseases, asthma, transplant rejection, inflammatory disorders and tumors) using the novel human anti-PD-1, PD-L1, and PD-L2 antibodies described herein.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: October 8, 2013
    Assignees: Emory University, Dana-Farber Cancer Institute, Inc.
    Inventors: Gordon J. Freeman, Rafi Ahmed, Timothy D. Jones, Francis J. Carr, James P. Gregson
  • Patent number: 8548983
    Abstract: Methods, computer-readable media, and machines are provided for transforming a query by removing a correlated predicate from a lateral view in an initial query. A query processor may transform the lateral view into a regular view such that a transformed query with the regular view is semantically equivalent to the initial query. The transformed query may support a larger set of access paths, join methods, and join permutations, may qualify for other transformations or optimizations, or may otherwise be executed or optimized differently from the initial query. The lateral view may reference an aggregation function, and the query processor may add a GROUP BY operator to the transformed query to preserve, after the correlated predicate has been pulled out of the lateral view, an interaction that was present between the aggregation function and the correlated predicate when the correlated predicate was in the lateral view.
    Type: Grant
    Filed: June 7, 2012
    Date of Patent: October 1, 2013
    Assignee: Oracle International Corporation
    Inventor: Rafi Ahmed
  • Patent number: 8521723
    Abstract: A method, apparatus, and stored instructions are provided for transforming an initial query having a scalar subquery with correlated predicates into a transformed query having transformed predicates that are not in the scalar subquery. The transformed predicates correspond to the correlated predicates, but the transformed predicates are no longer correlated. The transformed predicates reference an outer join operation to preserve null values that may have been generated by the correlated predicates that were in the scalar subquery of the initial query. The transformed query is semantically equivalent to the initial query. When creating an execution plan for the transformed query, the query processor may choose from a much larger set of access paths, join methods, and join permutations than those that were available for the initial query. The transformed query may qualify for other transformations or optimizations, or may otherwise be executed or optimized differently from the initial query.
    Type: Grant
    Filed: July 18, 2012
    Date of Patent: August 27, 2013
    Assignee: Oracle International Corporation
    Inventor: Rafi Ahmed
  • Patent number: 8438152
    Abstract: Methods for transforming a query to simulate a bushy tree execution plan for queries containing joins in series are provided. Left deep tree execution plans are supported by most relational database systems but are inefficient at processing queries directed to databases with snowstorm schema. A snowstorm schema contains several large fact tables and many smaller dimension tables, which make reference to one another. Bushy tree execution plans can be much more efficient for processing queries to snowstorm schema. The decision to choose between left-deep and bushy tree execution plans are based on the relative costs of the two execution plans. The methods provided transform queries which are otherwise executed with left deep tree execution plans into queries which are executed with simulated bushy tree execution plans.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: May 7, 2013
    Assignee: Oracle International Corporation
    Inventor: Rafi Ahmed
  • Patent number: 8352461
    Abstract: Methods for transforming a query to remove redundant tables and eliminate superfluous join operations is provided. The methods provided transform queries to remove redundant tables and anti-joins, semi-joins, and outer-joins. Whether a table is redundant is determined based on a set of criteria which, if fulfilled, indicates that the removal of the table and the anti-join, semi-join, or outer-join operation does not impact query results. The removal of a redundant table from a query also results in the elimination of the anti-join, semi-join, or outer-join operation that references the removed table.
    Type: Grant
    Filed: September 12, 2007
    Date of Patent: January 8, 2013
    Assignee: Oracle International Corporation
    Inventors: Rafi Ahmed, Thierry Cruanes, Sridhar Sarnobat