DiTommaso Law, LLC is built upon serving the litigation needs of our business clients, whether individuals, small businesses, or large corporations. Experienced in complex business litigation, our lawyers are at home in the courtroom.

Chicago Business Litigation Lawyers

DiTommaso Law is Built on Business and Class Action Litigation

We come into the picture when the stakes are high, because we “dare mighty things, to win glorious triumphs,” as Theodore Roosevelt put it.

DiTommaso Law focuses on the litigation needs of our individual, small business and large corporate clients. Our lawyers are at home executing complex business litigation in the heat of the courtroom.

We navigate the judicial system with fast, flexible and prudent skill as only an experienced litigation-focused firm can. From depositions, and briefs to courtroom presentation, our Chicago business litigation attorneys execute every step with committed diligence.

The outcome is results. Along with co-counsel, DiTommaso secured a $40,000,000 settlement in the class action lawsuit of Erikson v. Ameritech. The settlement was the second largest in the state of Illinois that year according to Crain’s Chicago Business. The DuPage Bar Legal Assistance Foundation has dubbed us Law Firm of the Year, citing our “commitment to the ideals of the legal profession.” Learn more about our record.

Click here to read Crain's Chicago Business on Largest Illinois Verdicts

The same hard-work philosophy that led Vincent DiTommaso to found his firm extends to contributing to the legal community. That dedication drives them to provide the very best representation for every client, large or small.

Our Experience is Your Biggest Asset

Our success is best demonstrated by the quality of companies and business professionals our Chicago business litigation lawyers have represented. Our list of clients includes:

  • DiMucci Family Corporations
  • Advance Preschool, Inc.
  • Aspen Marketing Services, Inc.
  • Leslie Hindman Auctions
  • Fontanini Italian Meats
  • Mostardi Platt Environmental
  • Bleuchip International, Inc.
  • Bob Rohrman Auto Group

Conversely, companies we have brought suit against include:

  • Adelphia
  • AT&T
  • Daimler Chrysler
  • General Motors Company
  • American Honda Motor Co., Inc.
  • Toyota Motor Credit
  • US Bank
  • Groupon
  • Hollister
  • Hilton Hotels Corporation
  • La Quinta Inn, Inc.
  • Infinity Broadcasting
  • Charter-Marcus
  • Nicor
  • TCI
  • Ameritech
  • Ford Motor Company
  • Toyota Motor Sales, U.S.A., Inc.
  • GMAC
  • Onyx Acceptance Corporation
  • NASDAQ Stock Market, LLC
  • General Electric
  • Facebook
  • Abercrombie & Fitch Stores, Inc.
  • Starwood Hotel Corporation
  • Marriott Corporation
  • Wyndham Management Corporation
  • Time Warner
  • Piccolo Sogno
  • Commonwealth Edison
  • DeVry, Inc.
  • The Volvo Group
Meet Our Attorneys
Attorney Vincent L. DiTommaso
Vincent L. DiTommaso

Vincent L. DiTommaso co-founded DiTommaso in 1987. Highly successful as a commercial, business and class action attorney, he has helped forge DiTommaso into a firm...

Attorney James V. DiTommaso
James V. DiTommaso

James V. DiTommaso has experience with consumer fraud, class-action, and complex business litigation in both federal and state courts including the trial court and appellate court...

Client Reviews
Jim DiTommaso and his staff were remarkably helpful and performed above and beyond our expectations when dealing with potential consumer fraud on our behalf. Katrina L.
A great firm with attorneys who truly fight for their clients. The Firm was on the case at all hours and made my interests a priority. All stars that I would have represent me time and again. Great job guys! Mark Z.
Never having the need to consult a law firm before to defend ourselves in a small business/family dispute it was VERY overwhelming. Gina G.
Vincent DiTommaso represented me in a complicated medical/business lawsuit. Vince and his team are not only personable and very professional, they are extremely competent litigators. Zahid A.
I called this law firm about a problem I had with my business partner. Vince DiTommaso got back to me right away and arranged to meet with me. The firm answered all my questions and came up with a great plan. Diahn H.
Contact Us
  1. 1Free Consultation
  2. 2Decades of Experience
  3. 3Track Record of Success

Fill out the contact form or call us at 630-333-0000 to schedule your free consultation.