Listed as one of Crain’s Chicago Business “Notable Litigators and Trial Attorneys” for 2023, Tinos Diamantatos has tried more than 20 cases and achieved an outstanding record of success at trial. Diamantatos’ trial representations span jurisdictions in both federal and state courts throughout the United States and have involved complex civil and criminal matters. Included among his trial successes are two separate trial wins for a Fortune 10 company.
Diamantatos’ representations span several industry sectors, including the retail, pharmaceutical, healthcare, pharmacy, medical device, and financial services industries. He has handled investigations, the defense, and prosecutions of matters involving alleged healthcare fraud, commodities fraud, mortgage fraud, money laundering, bank fraud, wire fraud, mail fraud, and tax evasion. Diamantatos has also handled other complex matters involving terrorism, racketeering, extortion, corruption, obstruction, and civil rights violations.
Lawdragon Honors
| Honor | Year | Practice |
|---|---|---|
| The 2026 Lawdragon 500 Leading Litigators in America | 2026 | Litigation, Investigations, Securities Enforcement |
Diamantatos serves as the deputy chair of Morgan Lewis's global white collar government investigations and sanctions practice. Diamantatos has been trusted by Fortune 500 companies, industry-leading pharmaceutical companies, healthcare companies, retail pharmacy chains, financial institutions, privately held businesses, and individuals in matters of utmost importance. Alongside members of Morgan Lewis’s elite white collar team, Diamantatos helps clients navigate government investigations, regulatory minefields, and related white collar litigation throughout the United States and around the world.
Diamantatos is a Fellow of the American College of Trial Lawyers, one of the premier, invitation-only legal associations in North America. He is also a former president of the prestigious Chicago Inn of Court, maintains an active pro bono practice, and is involved in multiple mentoring initiatives. Diamantatos is a former member of the John Marshall Law School Board of Trustees and has served as an adjunct trial advocacy professor for the law school, where he has also coached many successful trial teams competing at the national level. He also teaches, by invitation, law enforcement courses on trial techniques and investigative tactics to federal agents at their national training centers.