top of page



Consumer Protection Law


Attorney Mary Catherine Fons helps consumers who have been cheated, defrauded, harassed, or treated unfairly in the financial marketplace. She represents consumers to prosecute violations of state and federal consumer protection laws and to seek relief under those laws. Depending on the situation, the relief can include refunds, monetary penalties, recovery for emotional distress, cancellation of contracts, injunctions against wrongdoers to stop abusive or deceptive conduct, and payment of the consumer’s costs and reasonable attorney fees by the wrongdoer. Attorney Fons represents consumers in state and federal courts throughout Wisconsin.



Debt Collection Abuse and Harassment by:
  • Collection Agencies

  • Creditors

  • Debt Buyers

  • Lenders

  • Auto Title Loans

  • Payday Loans

Auto Repossessions
Unfair and Deceptive Sales and Business Practices
  • Auto Sales Industry

  • Timeshare Sales Industry

  • Home Repairs

  • Auto Repairs

  • Other Consumer Products and Services



Mary Catherine Fons has dedicated her law practice to fighting unfair, deceptive, and abusive sales, marketing, debt collection and other business practices on behalf of consumers. She founded Fons Law Office in 1994 to speak and fight for economic justice on behalf of consumers who have been defrauded or mistreated in the marketplace.

Attorney Fons received her undergraduate degree from the University of Wisconsin-Milwaukee in 1980 and her law degree from Marquette University Law School in 1984. She was a staff attorney at the UAW Legal Services Plan, providing personal legal services to union employees and retirees of American Motors and Chrysler in Kenosha, Wisconsin from 1984 to 1988, and to union employees and retirees of General Motors in Janesville, Wisconsin from 1989 until January of 1994.  In January of 1994 Attorney Fons left the UAW Legal Services Plan to open the Fons Law Office.

Attorney Fons has been repeatedly honored by her peers. In every year since 2006 she has been voted a consumer law “Super Lawyer” by her fellow Wisconsin lawyers, as acknowledged in Wisconsin Super Lawyers Magazine.  In 2011, Attorney Fons was the recipient of the Dan Tuchscherer Public Interest Lawyer of the Year Award by the Public Interest Law Section of the State Bar of Wisconsin.

Consumer protection laws are only enforced as legislatures intended if lawyers are available and willing to stand up to individuals and businesses engaging in unfair and abusive practices. Attorney Fons has made it a priority since opening Fons Law Office to teach, mentor, and encourage other lawyers and law students to practice consumer law so that consumers throughout Wisconsin and the U.S. will have access to representation by competent consumer lawyers. She is a frequent presenter at state and national legal education conferences and seminars on consumer law topics. She taught a Consumer Law course at Marquette University Law School in 2000 and 2004. She was a guest lecturer for a Consumer Law Seminar at the University of Wisconsin-Madison Law School from 1996 to 2010.


In addition to representing individual consumers with claims of abusive, unfair, and deceptive business practices, Attorney Fons has also advocated in the Wisconsin legislature and the United States Congress for strong consumer protection laws.



The information on this website is for informational purposes only and should not be construed as legal advice. Sending an email or making a phone call to Fons Law Office does not, on its own, create an attorney-client relationship. Attorney Fons is licensed to practice law in Wisconsin.



"Excellent attorney... fast, efficient and friendly... took her a problem with a timeshare we purchased under false promises. She explained the legal process in a language we could understand." - R. and C., Wisconsin Dells


"Very clear and precise. Direct with questioning and thorough... [exceeded] our expectations." - B. and B., Delavan


"Very easy and pleasant to work with. We felt helpless to get out of the situation we were in. We were freed from the situation and even received very good compensation." - P. and R., Middleton


"Very grateful... helped a lot. Our experience was wonderful." - S., Port Washington

"Kind, helpful and understanding... explained the process thoroughly." - F., Cudahy


"Super pleased with everything from start to end... I was kept up to date every step of the way on what was going on and what may or may not happen and I never doubted or lost faith in her for a second." - S., Warrens


"Very professional, attentive, and effective representation." - C., Stoughton


"An answer to our prayers and nightmares... on the spot ready to help... had the experience and tools to intervene for us." - N. and G., Rothschild.



Mary Fons


Fons Law Office

Mary Catherine Fons

Consumer Protection Lawyer

500 South Page Street

Stoughton, WI 53589


Fax: 608-873-0496



Call 608-873-1270 for a free phone consultation.

In-person meetings by appointment only.

bottom of page