Mary E. Chlebowski, PHD

Mary E. Chlebowski, PhD
McNeill Baur PLLC                                      125 Cambridge Park Drive, Suite 301
Cambridge, MA 02140

Providing value through a solid background in the chemical and pharmaceutical sciences coupled with an in depth experience in prosecution and litigation

Mary E. Chlebowski, PhD, focuses her practice on worldwide patent prosecution and portfolio management in the chemical and pharmaceutical sciences. Mary has a wide range of prosecution experience including application drafting, prosecuting world-wide applications, and interference work. In addition, Mary has worked on opposition to applicants and patents including third-party submissions in the US and oppositions before the European Patent Office.

Mary's litigation experience included conducting fact and expert discovery, preparing and defending witnesses, drafting pleadings, motions, and briefs including for claim construction, and preparing for district court trials and Federal Circuit appeals. This experience, coupled with her extensive prosecution practice, allows her to provide strategic client counseling including writing opinions and conducting detailed due diligence projects. Mary has researched and prepared opinions relating to patentability, validity, freedom-to-operate, infringement, and Orange book FDA listing.

Prior to joining McNeill Baur PLLC, Mary spent more than 10 years as a patent attorney at Finnegan, Henderson, Farabow, Garrett & Dunner, LLP, most recently as an expert prosecution trainer. Prior to Finnegan, Mary earned her PhD in Chemistry from Emory University and conducted research at the University of Avignon in France, the University of Florida, and Niagara University. 

Select Publications

“A Game Changer in Europe. The Unified Patent Court,” IP Litigator, January/February 2015 (coauthor).

“The Changing Law of Multiparty Infringement in the US and How It Differs from Europe,” Parts one and Two, Bloomberg Law Reports, September 13, 2011, 26-28, September 19, 2011, 30-34 (coauthor).

Surface Tension of Aquenous Amphiphiles,” Langmuir, 2005, 21(20), 9010-9012 (coauthor).

A Tribute to the Phospholipid,” Langmuir, 2005, 21(23), 10336-10341 (coauthor).

“Is the Ether Group Hydrophobic or Hydrophilic?” Langmuir, 2005, 21(7), 2689-2625 (coauthor).

Ultrastructure in Frozen/Etched Saline Solutions on the Internal Cleansing of Ice,” J. Am. Chem. Soc.2004, 126(19), 5987-5989 (coauthor).

Catalytic Oxidative Carbonylation of Primary and Secondary Diamines to Cyclic Ureas Optimization and Substituent Studies,” J. Org. Chem., 2002 67(12), 4086-4092.




District of Columbia

US Patent and Trademark Office

US Court of Appeals, Federal Circuit

US Court of Appeals, Veteran Claims




Georgetown University Law Center

JD, 2011


Emory University

PhD, Organic Chemistry, 2006


Niagara University

BS, Chemistry, 2001