Thaila K. Sundaresan

Senior Associate

Sundaresan, Thaila K.

Thaila Sundaresan has represented public and private companies in a wide variety of civil matters before state and federal courts, at both the trial and appellate levels. Ms. Sundaresan's trial practice focuses on commercial litigation, and has included representing clients in commercial and intellectual property disputes at several stages of litigation. In her appellate practice, Ms. Sundaresan has been involved in briefing for matters involving a wide range of issues of both federal and state law, including contract law, veterans benefits and criminal law. Ms. Sundaresan has represented clients before the United States Court of Appeals for the Federal Circuit and the Massachusetts Supreme Judicial Court.

Ms. Sundaresan also maintains an active pro bono practice. Most recently, she represented the Massachusetts Association of Criminal Defense Lawyers in an amicus submission to the Massachusetts Supreme Judicial Court concerning whether the acquisition of cell site location information constitutes a search under the Fourth Amendment.

Prior to joining the firm, Ms. Sundaresan served as a law clerk to Chief Judge Theodore A. McKee of the United States Court of Appeals for the Third Circuit, and to Chief Judge Deborah K. Chasanow of the United States District Court for the District of Maryland. She also worked as a litigation associate at Sidley Austin LLP in Washington DC. 

Publications & News


June 12, 2014

Diversity Committee Hosts Event With Local SABA Chapter

On May 28, the Boston Diversity Committee hosted “Speaking with Poise and Professionalism,” a discussion with Partner Mark Fleming and Counsel Kevin Prussia.

February 19, 2014

Massachusetts Supreme Judicial Court Rules in Favor of WilmerHale and ACLU in Case Involving Cell Phone Privacy

On February 18, 2014, the Massachusetts Supreme Judicial Court ruled in Commonwealth v. Augustine that a warrant will often be required when local or state police attempt to track the cell phones of Massachusetts residents.

Community Involvement

Ms. Sundaresan currently serves on the Alumni Board of the University of Maryland School of Law and the South Asian Bar Association of Greater Boston.
Prior to law school, Ms. Sundaresan was the director of leadership giving for United Way in Chicago, Illinois. She led a department that helped generate fourteen million in contributions from donors in Fortune 500 companies, and developed a strategic proposal that resulted in the organization’s first one million corporate matching grant. Additionally, she was the founder and executive director of Circle of Love, an organization dedicated to improving the quality of life for the elderly and disabled.


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JD, magna cum laude, University of Maryland School of Law, 2008, Leadership Scholar, Order of the Coif, Order of the Barristers

BA, International Relations, minor in Spanish, with honors, Stanford University, 2000

Bar Admissions


District of Columbia






The Hon. Theodore A. McKee, US Court of Appeals for the Third Circuit, 2010 - 2011

The Hon. Deborah K. Chasanow, US District Court for the District of Maryland, 2008 - 2009