Warren J. Marwedel

Tom is a litigator who represents property taxpayers throughout the country, ensuring their tax liabilities are secured at the lowest level allowable under the law. He represents clients spanning numerous industries, ranging in size and complexity from those with large, sophisticated real estate portfolios to those with just one building critical to their operations. Tom sets his clients’ expectations regarding measurable results in every property tax appeal. Before filing, he provides ...

Ken has resolved coverage issues involving an alphabet soup of insurance policies, including CGL, D&O, E&O, EPLI, PLL and WC/EL, as well as first-party property policies, crime bonds and surety bonds. He offers a deep understanding of loss-sensitive insurance programs, having litigated disputes involving workers’ compensation claim handling and deductible and retrospective premium billing. Ken also works in the trenches of product liability, professional liability and commercial...

Partner Ryan T. Johnson concentrates his practice in the areas of construction law, professional liability, and complex commercial litigation. Ryan has over 15 years of experience successfully representing clients in construction related matters in Illinois and nationally, including jury and bench trials in state and federal courts as well as arbitration proceedings. In addition to dispute resolution, Ryan also engages in contract negotiations, contracting drafting and business counseling on ...

A former chief patent counsel to a Fortune 500 communications company with deep first chair trial experience, Thomas Pasternak focuses his practice on patent, trademark, and trade secret litigation, licensing, and prosecution. He protects and defends his clients’ intellectual property rights in district courts throughout the United States, the International Trade Commission (ITC), the Patent Trial and Appeal Board (PTAB), and the Federal Circuit and Seventh Circuit Courts of Appeal. He ...

David Koropp is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. David, who practices law in Chicago, Illinois, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David is held by other top lawyers in the same geographic and legal practice area.

Jason is a litigator and strategic counselor in all aspects of labor and employment law. He litigates unfair labor practices before the NLRB, arbitrates labor grievances, negotiates and administers collective bargaining agreements, and develops long-term labor strategies to maximize the value and effectiveness of each client’s workforce. He also litigates and provides daily counsel on matters arising out of the numerous federal and state counterpart statutes governing employers, includi...

Scott Mendeloff combines an 11-year tenure as a former federal prosecutor with more than 19 years of experience in private practice. He focuses his practice on commercial trials and white collar criminal litigation. Scott has been consistently recognized by Chambers USA in the area of commercial litigation and by Leading Lawyers in the areas of commercial and white collar litigation. Scott has tried to conclusion more than 50 cases in a wide array of areas in both the civil and criminal arena...

Richard K. Johnson is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Richard K., who practices law in Chicago, Illinois, has been recognized since 2009. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Richard K. is held by other top lawyers in the same geographic and legal practice area.

Tia C. Ghattas is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation. Tia C., who practices law in Chicago, Illinois, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tia C. is held by other top lawyers in the same geographic and legal practice area.

Mark D. Pollack is a partner in the Litigation practice of Paul Hastings and is based in the firm’s Chicago office. He also serves as the Firm’s General Counsel. Mr. Pollack concentrates his practice in the areas of white-collar criminal defense, complex commercial litigation, internal corporate investigations, and compliance counseling. He has extensive experience in counseling and defending corporations, boards of directors, and executive officers in relation to a broad range of...