Attorneys

David Chizewer, a principal in the firm's litigation group, has been featured in the National Law Journal’s list of 10 of the nation’s top litigators. He was named Trial Lawyer of the Year by the Public Justice Foundation, and was separately a runner-up for that same award. He was also named Lawyer of the Year by the Taxpayers Against Fraud Education Fund. The federal court in Chicago has twice given Mr. Chizewer the Award for Excellence in Pro Bono Service, and the National Law Journal has named him an "Environmental Trailblazer" for his work on environmental justice issues.

Roger Lewis is a principal in the firm’s Litigation Group.  His practice focuses on complex commercial litigation in the state and federal courts and administrative agencies.  In addition to general commercial contract and tort matters, his cases have involved lending and financial institution litigation, consumer and property tax litigation, False Claims Act litigation and partnership and shareholder issues. He has extensive experience in protecting the rights of secured creditors in bankruptcy and insolvency litigation in courts nationwide.  Mr. Lewis aggressively pursues litigation objectives within the framework of the client's broader goals, counseling clients thoughtfully and rigorously through their most complex, high-stakes matters.  His commercial litigation experience includes cases in Illinois, Ohio, New York, California, North Carolina, Michigan, Wisconsin, Texas, Missouri and Kansas.

Matthew Organ is a principal in the firm's Litigation and Labor & Employment Groups. He has significant experience representing plaintiffs in qui tam/whistleblower cases under the federal and state False Claims Acts. He has handled matters involving off-label marketing, upcoding, illegal kickbacks and referral arrangements, false certifications of compliance with Medicare/Medicaid regulations and other Medicare/Medicaid fraud.

Bill Meyers is a principal in the Litigation Group. Throughout his career, he has handled a variety of complex commercial litigation matters. Mr. Meyers has extensive experience in bankruptcy and insolvency litigation in courts nationwide and regularly protects the rights of secured creditors in these proceedings. He also has significant experience representing plaintiffs in qui tam/whistleblower cases under the federal and state False Claims Acts.  

Colin Wexler is a principal in the firm's Litigation Group. He focuses his practice on complex commercial litigation, including product liability, consumer class actions, breach of contract and fiduciary duty, insurance coverage work for policyholders, antitrust actions, as well as claims based on both the federal and state False Claims Acts. Mr. Wexler's practice has also included accounting, actuarial and legal malpractice claims.

Harleen Kaur is a member of Goldberg Kohn's Litigation Group.  Ms. Kaur's practice focuses on complex commercial litigation.  Her practice includes false claims actions, employment law, and banking and finance matters. She also has experience representing clients in real estate, tax, and insurance disputes. Ms. Kaur has practiced in federal and state court in all stages of litigation, including trial.

Takayuki Ono is an associate in the Firm’s Litigation Group. Leveraging his previous career as a professional journalist, Mr. Ono maintains a robust practice assisting the U.S. Attorney’s Office, Securities and Exchange Commission, and state attorneys general in investigating and prosecuting fraud allegations.  Most recently, Mr. Ono represented the relator in a lawsuit against a global telecommunications company alleging that the company committed fraud by overcharging schools and libraries on their phone and internet bills.  He also has experience in initiating whistleblower claims under seal before the Department of Justice and the Securities and Exchange Commission.

Joe Hoolihan is an associate in the firm's Litigation group. Mr. Hoolihan focuses on complex commercial disputes, including False Claims Act matters. He is admitted to practice in Illinois and the U.S. District Court for the Northern District of Illinois. Mr. Hoolihan has handled all aspects of pleading, motion practice, and discovery. He also has experience handling trial preparation, arbitration, mediation, and settlement conferences.

Margaret O'Connor is an associate in the firm's Litigation group.  Ms. O'Connor focuses on complex commercial disputes.  She has experience handling all aspects of pleading, motion practice, and discovery, as well as trial preparation, mediation, and settlement conferences. She also maintains an active pro bono practice, primarily in immigration law matters, and is a member of the National Immigrant Justice Center (NIJC)'s Junior Leadership Board.  She was named a "Rising Star" at NIJC's 20th Annual Human Rights Awards 2019. Prior to joining Goldberg Kohn, Ms. O'Connor practiced in Chicago for Dechert LLP, representing private and public entities in complex commercial litigation.

Juan Arguello is an associate in the firm's Litigation Group.  Mr. Arguello is admitted to practice law in Illinois, the U.S. District Court for the Northern District of Illinois, and the U.S. District Court for the Eastern District of Wisconsin.  Juan received his law degree from Harvard University in 2015.  Juan received his B.A. in Philosophy, magna cum laude, in 2012 from DePaul University.  Prior to joining Goldberg Kohn, Juan worked at a Chicago non-profit organization where he provided removal defense to detained immigrants before the Chicago Immigration Court and the Board of Immigration Appeals.  Juan also worked at a large international firm, where he represented clients in a range of complex matters, including commercial disputes, government regulation, and advised clients throughout the contract formation process.

For the past 21 years, Ms. Smith has been employed as a litigation legal assistant, participating in more than 20 jury trials or major hearings at various locations across the United States. She joined Goldberg Kohn as its litigation legal assistant supervisor and continues to support the attorneys in all phases of litigation.