D. Matthew Feldhaus is a litigator who focuses his practice on white collar defense, investigations and corporate compliance.  Mr. Feldhaus has extensive experience representing clients in government inquiries, internal investigations, and compliance related matters, both in the United States and abroad.  He has conducted investigations related to such issues as potential fraud, theft of intellectual property, regulatory compliance and the Foreign Corrupt Practices Act.

Mr. Feldhaus has also represented clients in civil litigation and appellate matters related to intellectual property rights, technology, products liability, financial services, and telecommunications.  He has significant experience advising clients on building and protecting their brands and trademark rights, both domestic and foreign, and he has represented clients in proceedings tried before the Trademark Trial and Appeal Board of the U.S. Patent and Trademark Office. 

Prior to joining Jenner & Block, Mr. Feldhaus completed a PILI Fellowship at Lawyers for the Creative Arts.   During his fellowship, he drafted agreements for artists and entertainers and interviewed clients regarding potential litigation.  Mr. Feldhaus was editor-in-chief of the Missouri Law Review and received the Judge Warren D. Welliver Prize for Best Work in Torts.  Before attending law school, he worked in the telecommunications industry for five years as the manager of Product Development and Manager of Competitive Intelligence for Ameritech New Media.  In these roles, he provided senior executives and marketing and sales managers with analysis and recommendations to support product design, marketing, and sales decisions in a highly competitive environment.  In the product development role, Mr. Feldhaus developed a digital cable service, remote control, and interactive customer service guide.

Mr. Feldhaus is on the Board of Directors for the Aids Legal Council of Chicago (“ALCC”) and also has an active pro bono practice.  In 2014, he assisted the AIDS Foundation of Chicago and ALCC by investigating and drafting a comprehensive report for the Illinois Department of Insurance (“DOI”) on apparent gaps in coverage for people with HIV/AIDs in health plans offered through the Illinois Insurance Marketplace.  As a result of the report, the DOI issued a bulletin to inform insurers that DOI would not permit health insurance plans on the Marketplace that discriminate against people with HIV/AIDs, making Illinois the first state in the nation to issue an explicit prohibition on discrimination against people with HIV in health insurance marketplace plans.  He also contributed to an amicus brief on behalf of medical and mental health professionals concerning the standards of care for transgender individuals in Fields, et al. v. Smith, et al., Nos. 10-2339 & 10-2466.  The Seventh Circuit Court of Appeals affirmed the position advocated in the amicus brief and relied on the standards of care discussed in the brief in reaching its decision.  He has represented other pro bono clients in a wide range of issues, including Section 1983 litigation, appeals of criminal convictions and the denial of habeas corpus, and trademark and copyright disputes. Mr. Feldhaus also assisted the Northern District of Illinois Local Patent Rules Committee in drafting new Local Patent Rules for Electronically Stored Information (ESI).