John P. Shanahan

Biography

John Shanahan is a trial attorney with more than a decade of experience handling complex commercial litigation in state and federal courts nationwide. His practice focuses on high-stakes business disputes, construction and product defect matters, and he also has substantial experience defending catastrophic trucking and transportation cases involving significant exposure and complex factual records. His clients range from closely held and family-owned enterprises to large publicly traded companies facing complex business litigation.

Construction Litigation

John represents owners, general contractors, subcontractors, and suppliers in matters involving public projects, infrastructure construction, and private commercial development. John has developed a reputation for handling challenging cases. John is frequently retained after litigation has become unusually complicated or when clients seek new counsel to redirect a case’s strategy. He has a proven ability to identify overlooked issues, develop innovative legal theories, and guide difficult cases toward favorable outcomes through negotiation, arbitration, trial, and appeal. John is an Advisor on the Board of the Construction and Public Contract Law Section for the State Bar of Wisconsin. John has represented some of the nation’s largest infrastructure contractors and leading regional construction-material suppliers in complex litigation across the country.

Trucking and Transportation

John has substantial experience defending catastrophic trucking and transportation cases involving significant exposure, serious injuries, wrongful death claims, and complex factual records. He has successfully defended seven- and eight-figure cases throughout the country on behalf of motor carriers, insurers, and transportation-related businesses. He excels at mastering extensive records and developing creative litigation strategies that position clients for favorable resolutions.

Business Disputes

John litigates complex business disputes involving contracts, business torts, shareholder and partnership litigation, fiduciary-duty claims, trade-secret issues, and UCC-related matters. John’s ability to quickly identify key issues, develop innovative legal strategies, and simplify complicated issues has helped clients achieve successful outcomes in courts around the country.

Whistleblower Cases

John has recovered millions of dollars on behalf of the government through successful False Claims Act litigation. He represents whistleblowers in sophisticated qui tam cases involving healthcare fraud, government contracting fraud, and other schemes that result in the misuse of taxpayer funds. He has significant experience guiding whistleblowers through every stage of the investigation and litigation process. His practice includes working closely with government investigators and prosecutors to develop and pursue cases involving sophisticated fraud schemes and substantial damages.