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Sarah F. Lacey - Senior Counsel

About Sarah

Ms. Lacey is a leading litigator in the District of Maryland. After completing her undergraduate studies in Chemical Engineering at M.I.T., Ms. Lacey graduated second in her class from The Catholic University of America, Columbus School of Law in Washington, D.C. Following law school, Ms. Lacey joined the Litigation Department of Saul Ewing LLP as an Associate where she was also a member of the White Collar and Government Enforcement practice group and Intellectual Property practice group. Ms. Lacey has developed a national litigation practice representing clients in numerous federal courts and across diverse industries.

In addition, Ms. Lacey has experience representing clients in opposition and cancellation proceedings before the Trademark Trial and Appeal Board.

While in law school, Ms. Lacey interned for the Advocacy for the Elderly Clinic of Columbus Community Legal Services, where she participated in litigation before the U.S. Court of Federal Claims and the Court of Appeals for the Federal Circuit. Ms. Lacey also interned for the Hon. Judge Royce C. Lamberth of the U.S. District Court for the District of Columbia.

Prior to law school, Ms. Lacey was a field process engineer for USFilter-Memcor in Towson, Maryland. In this position, she designed and executed pilot studies employing proprietary microfiltration membrane technology on various municipal and industrial water and wastewater sources. Her responsibilities included computer programming, mechanical and electrical set-up of pilot units, data analysis, process optimization, preparing comparative reports and presenting results to senior management and engineering consultants. Sarah’s successful projects included a six-month pilot study for the 22 million-gallon-per-day expansion of the Forest Park Water Treatment Plant in Chalfont, Pennsylvania, now one of the largest membrane filtration facilities in the eastern United States.

representative matters

  • Defending a corporate officer in a pre-indictment government investigation into allegedly fraudulent accounting and business practices
  • Assessing evidence of overbilling and preparing a complaint and disclosure memorandum in a qui tam action under the federal False Claims Act
  • Representing an industry-leading flooring manufacturer in actions to enforce its copyright against a competing manufacturer in the U.S. District Courts for the Northern District of Georgia and the District of Utah, and the U.S. Court of Appeals for the Eleventh Circuit
  • Defending a university professor in a pre-indictment government investigation of federal grant fraud
  • Representing a dental professional in a state government investigation into allegedly fraudulent overbilling of Medicaid
  • Playing a key role on a large team representing a court-appointed independent examiner in his investigation of creditors' allegations of wrongdoing during the 2007 leveraged buyout of the Tribune Company
  • Representing a premier national staffing company in a trademark infringement case against a regional competitor involving extensive electronic discovery, depositions, and motion practice in the U.S. District Court for the Southern District of Florida
  • Representing a holding company for publishers of financial newsletters in copyright and trademark litigation matters, including tracking anonymous Internet users, obtaining orders to compel domestic and foreign ISPs to disclose user identities, and taking down a disparaging Web site
  • Defending a manufacturer and distributor of optical products in patent action brought by a non-practicing entity against hundreds of defendants concerning Web site store locators, including participating in a large joint defense/common interest group, in the U.S. District Court for the Eastern District of Texas
  • Representing a plaintiff non-practicing entity in two patent cases involving computer networking and data storage technologies in the U.S. District Court for the District of Massachusetts
  • Representing a plaintiff wholesaler in a multiparty unfair competition and rebating action in New Jersey state trial and appellate courts


  • The Catholic University of America, Columbus School of Law (J.D., summa cum laude, 2008)
  • Chemical Engineering, Massachusetts Institute of Technology (B.S., 2002)

bar admissions

  • Maryland
  • U.S. Supreme Court
  • U.S. District Court for the District of Maryland
  • U.S. Court of Appeals for the Fourth Circuits
  • U.S. District Court, District of Columbia