Over 60 years of


Specializing in a multitude of Civil Law actions including Insurance Defense, Subrogation, Personal Injury, General Litigation & Mediation Services, our attorneys have the know-how you need.


Winner Law Firm, LLC (originally Casper, Winner & Perina) was founded by John Winner (1921 – 2008) in Madison, WI in 1958. Winner Law Firm offers clients widespread experience and expertise in all aspects of insurance litigation. We value our recognized history of successful results in state and federal courts throughout Wisconsin. Our detailed knowledge of the statutes and law governing insurance matters, familiarity with local jurisdictions, and knowledge of industry best practices allows us to offer focused and customized client service that are second to none.   

our mission statement

Our mission at Winner Law Firm, LLC is to provide our clients superior quality legal services by identifying our client’s goals, representing them with the greatest degree of professional integrity and performing relentlessly for the success of our clients and the firm.  The firm encourages innovative thinking, dedication to quality customer service and result driven outcomes to continue our superior reputation with our clients, employees, and community.


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   Winner Law Firm, LLC thoroughly prepares each and every case we take on and, through skilled practice, fight to achieve positive results for our clients. We believe in taking cases to Trial only when appropriate. If Trial is appropriate, we have a well-earned reputation of obtaining positive outcomes for our clients. Our attorneys’ experience in insurance industry litigation assists us in protecting our clients from unwanted risk and liability. Winner Law Firm, LLC has built a reputation for providing sound legal guidance, determined advocacy, and attentive client service.