His recent representations include:
- Two nationwide pharmacy chains in health care fraud investigations by HHS/OIG and U.S. Attorneys’ Offices in New Jersey, the Eastern District of Michigan and the Southern District of Florida
- A commercial real estate loan servicer in civil RICO litigation in state and federal trial and appellate courts in Chicago
- A nationwide transportation company in numerous class and mass actions and Attorney General investigations in St. Louis, New York, Boston, North Dakota, New Hampshire and Maine arising out of alleged misclassification of independent contractors
- A New York cosmetic company in a class action alleging misclassification of employees as independent contractors in federal court in Los Angeles
- A Boston technology company in a wage-hour class action in federal court in Los Angeles
- A Boston defense contractor in a False Claims Act action in federal court in Boston
- A plaintiff travel company in a trademark infringement trial in federal court in Boston (jury found defendant liable)
- A construction executive in a federal criminal bribery and RICO trial in Springfield, MA (defendant found not guilty on all counts)
- A Silicon Valley semiconductor equipment manufacturer in a trade secret action in federal court in San Jose against a Chinese competitor
- The CFO of a publicly traded company in a securities fraud trial in the District of New Hampshire
- A pharmaceutical company sales executive in a criminal investigation by the U.S. Attorney for the Eastern District of New York based on alleged off-label marketing and anti-kickback law violations
- The CEO of a mutual fund company in an SEC enforcement action in the Southern District of New York based on alleged "market timing" in the company's funds
Mr. Rehnquist has served as an adjunct professor at Boston University School of Law, where he designed and taught a full-credit seminar titled Federal Criminal Justice.
Mr. Rehnquist has been at Goodwin since 1988, excluding four years (1994-1998) when he served as an Assistant U.S. Attorney for the District of Massachusetts. During his years as a federal prosecutor, working in both the Economic Crimes Unit and Organized Crime Strike Force Unit of the U.S. Attorney's Office in Boston, Mr. Rehnquist investigated and prosecuted a wide variety of complex business crimes, including fraud, tax, public corruption, trademark and racketeering cases. He had numerous jury trials and argued numerous appeals in the U.S. Court of Appeals for the First Circuit.