John A. LeBlanc

Civil Litigation:

• Represented a global technology company in various state and federal court litigations involving multi-million dollar claims for fraud, breach of contract, theft of trade secrets, and violations of state consumer protection laws.
• Represented a manufacturer of agricultural products accused of trade secret misappropriation and violation of ch. 93A. Obtained complete dismissal of claims prior to trial.
• Represented a syndicate of underwriters in securities fraud class action brought by shareholders in federal court. Obtained complete dismissal of claims prior to trial.
• Represented a family trust against claims brought to terminate client’s rights under 20-year, multimillion-dollar commercial lease. Following a jury trial, obtained complete dismissal of all claims.
• Represented a global private equity firm in expedited litigation in Delaware Court of Chancery involving multi-million dollar claims of fraud and breach of contract. The case settled favorably to the client prior to trial.
• Represented a large apparel company in state court litigation involving of fraud, breach of contract, and related tort claims. The case settled favorably to the client prior to trial.
• Represented a global pharmaceutical manufacturer in multidistrict mass tort litigation. The cases settled favorably to the client prior to trial.

White-Collar Litigation & Investigations:

• Represented a former executive and director in criminal wire fraud and money laundering investigation.
• Represented a global biotechnology company in investigation of former employee’s theft of trade secrets.
• Represented a individual in criminal antitrust investigation.
• Represented several global medical companies in False Claims Act qui tam actions brought in federal court.
• Represented several global medical companies in False Claims Act investigations brought by the DOJ.
• Represented a global medical products company in insider trading investigation brought by the SEC.
• Represented multiple global pharmaceutical manufacturers in cross-border investigations into clinical trial-related conduct.

Pro Bono:

• Member of the Special Master team at Ropes & Gray appointed by the Supreme Judicial Court of Massachusetts in March 2020 to oversee inmate confinement conditions and early release opportunities during the COVID-19 crisis.

Work Experience

• Hinckley Allen
  • Associate (2023-Present)
  • Summer Associate (2016)
  • Legal Intern (2014-2015)
• Ropes & Gray LLP
  • Associate (2019-2023)
  • Summer Associate (2017)
• Hon. Scott L. Kafker, Massachusetts Supreme Judicial Court
  • Judicial Law Clerk (2018-2019)

Honors & Awards

• Best Lawyers: Ones to Watch (2026)
  • Criminal Defense: White-Collar
• Super Lawyers, Massachusetts: Rising Stars (2024-2025)
  • Business Litigation

Professional Affiliations

• Boston Bar Association
• Massachusetts Supreme Judicial Court Law Clerk’s Society

Bar Memberships

• Massachusetts
• United States District Court for the District of Massachusetts

Publications

• “A Search Is a Search”: Scanning a Credit, Debit, or Gift Card Is a Search Under the Fourth Amendment, 59 B.C. L. REV. 1089 (2018)
• But See Kohlheim: The Third Circuit Muddies the Water on the Compensability of Employee Meal Periods Under the Fair Labor Standards Act in Babcock v. Butler County, 58 B.C. L. REV. E. SUPP. 91 (2016)