Andrew O. Larsen, Ph.D.

New York
767 Third Avenue, 23rd Floor
New York, NY 10017
D: 212.223.6658
Contact My Assistant
Frannie Grasso
D: 212.223.7897

Andrew is a patent attorney in Merchant & Gould’s New York office, who focuses his practice on Hatch-Waxman litigation, contested matters before the U.S. Patent and Trademark Office and general IP counseling. . Andrew primarily assists clients in the pharmaceutical, biotechnology, and chemical industries with developing and strengthening their patent estates and their overall litigation strategy, including pre-litigation counseling, fact and expert discovery, claim construction analysis, deposition and motion practice, and assistance at trial.  He also dedicates significant time to inter partes review proceedings before the Patent Trial and Appeal Board, freedom-to-operate, validity and infringement investigations, and due diligence, as well as patent procurement and life cycle management advice for a wide range of industries.

Throughout his academic and legal career, Andrew has developed extensive technical and legal training within multiple disciplines, including organic, medicinal, organometallic and polymer chemistry, which provides him with a thorough, and oftentimes unique, perspective on navigating the IP landscape. This diverse experience set has proven invaluable to his practice in technical areas such as new chemical entities, pharmaceutics and pharmaceutical dosage form design, methods for treating disease, x-ray crystallography and solid-state polymorphism, antibodies, diversity oriented synthesis and drug development using large chemical libraries, transition metal catalysis, medical devices, CNTs and other nanotechnology, semi-conductors, and LCD and LED displays technologies.  

Prior to joining Merchant & Gould, Andrew was a patent agent at an intellectual property law firm in New York. He was also a recipient of the NIH Ruth Kirschstein National Research Service Award (NRSA) for postdoctoral studies in organic chemistry directed to catalytic and enantioselective synthesis techniques and their application to the total synthesis of complex natural product targets. During his graduate work at The University of North Carolina, Andrew researched approaches to asymmetric synthesis using polymer supported transition metal catalyst systems and the concept of molecular imprinting.

Andrew enjoys technical scuba diving, photography, philosophy, cycling, music and the great outdoors.


Fordham University School of Law
J.D., 2010

Boston College
NIH Postdoctoral Fellow, 2002-2004

University of North Carolina
Ph.D. Organic Chemistry, 2002

College of William and Mary
B.S. Chemistry, 1996


U.S. Patent and Trademark Office
New York Bar

Professional Affiliations

New York State Bar Association

Publications & Speaking

Bidentate NHC-Based Chiral Ligands for Efficient Cu-Catalyzed Enantioselective Allylic Alkylations: Structure and Activity of an Air-Stable Chiral Cu Complex, Journal of the American Chemical Society, 126: 11130-11131, Andrew Larsen, Ph.D., J.E. Campbell, A.H. Hoveyda, W. Leu, C.N. Oberhuber (2004)

Ethylene-Linked Bisphenol Ligands: Efficient Synthesis, Titanium Coordination Chemistry and Lewis Acid Catalysis, Journal of Organometallic Chemistry, 15: 121-124, Andrew Larsen, Ph.D., J.W. Anthis, M.R.Gangé, P.S. White (2003)

Disparate Roles of Chiral Ligands and Molecularly Imprinted Cavities in Asymmetric Catalysis and Chiral Poisoning, Organometallics, 21: 7-9, Andrew Larsen, Ph.D., M.R. Gangé, J.H. Koh, P.S. White (2002)

Asymmetric Pt(II)-Catalyzed Ene Reactions: Counterion Dependent Additive and Diphosphine Electronic Effects, Organic Letters, 3: 1233-1236, Andrew Larsen, Ph.D., M.R. Gangé, J.H. Koh (2001)

Asymmetric Synthesis of Rigid C2-Symmetric Bis(ferrocenyl) Diol and Diamine Ligands, Organometallics 1999, 18, 5157-5162; Andrew Larsen, Ph.D., R. A. Taylor, P. S. White and M. R. Gagné

Acid-Base Adducts of Catalytically Active Titanium(IV) Lewis Acids, Inorg. Chem. 1999, 38, 4824-4828; Andrew Larsen, Ph.D., P. S. White and M. R. Gagné