About Us

About Us

About Us

Singular Focus. Outstanding Results.

Leydig, Voit & Mayer has a singular focus: intellectual property law. Leydig’s singular focus enables the firm’s attorneys to provide its clients with outstanding results.

Singular Focus. Global Reach.

When organizations and individuals in the United States and abroad face challenging and unique intellectual property issues, they turn to Leydig for efficient and effective representation. In fact, Leydig, Voit & Mayer has appeared in Fortune magazine as one of “The Go-To Law Firms® of the World’s Leading Companies.”

Leydig works with clients from a wide range of industries including:

  • Pharmaceutical
  • Chemical and chemical engineering
  • Software
  • Computer
  • Electronics
  • Manufacturing and machine design
  • Biotechnology
  • Medical devices
  • Financial services
  • Consumer products

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Singular Focus. Unparalleled Performance.

Leydig is committed to providing the highest quality of service in a cost-effective manner. Chambers USA described Leydig, Voit & Mayer as “the quintessential, time-honored patent firm” and as “top-notch and cost-effective.”

Leydig has over 80 attorneys and patent agents, along with 100 staff professionals, including law clerks, paralegals and administrative personnel, who work in the firm’s five offices in the U.S. and Germany. Our legal teams are led by senior attorneys, whose track records are a testament to their experience, industry understanding, and commitment to providing the highest value of service. To provide the greatest value to clients, our legal teams are streamlined, creative, and focused on results and efficiency.

Our firm has a history of distinguished courtroom performance. Leydig’s attorneys have long been known for their effectiveness in both bench and jury trials for patent, trademark and trade secret owners, and those accused of infringement or misappropriation. We have successfully litigated several industry-founding patents, including patents and patentees inducted into the National Inventors Hall of Fame.

At Leydig, Voit & Mayer, the lawyers who handle trials and have courtroom expertise also have the technical expertise needed to prosecute patents and trademarks. The wealth of litigation and technical experience of the firm’s attorneys and staff enable the firm to tailor its services to the unique litigation needs of each client and to deliver the highest quality representation to clients in a cost-effective manner. Companies faced with “bet-the-company litigation” turn to our team of seasoned litigators with confidence.

Today, the ongoing success of Leydig continues to enhance its historical reputation for excellence. It is that dedication to outstanding results that keeps Leydig high on the list of top firms that advise the world’s largest corporations.

Leydig, Voit & Mayer’s professionals are widely recognized as leaders in many other professional listings and directories, including:

  • The Best Lawyers in America®
  • Chambers & Partners
  • Fortune Magazine
  • Intellectual Property Today
  • Leading Lawyers
  • Super Lawyers in Illinois
  • Rising Stars in Illinois
  • “Top Lawyers in Illinois” – Chicago Lawyer
  • The Legal 500 U.S.

Leydig, Voit & Mayer considers diversity and inclusion to be hallmarks of the firm’s practice and core values.  We highly value differences between people including those of different races, ethnicities, genders, ages, religions, disabilities, socioeconomic backgrounds, and sexual orientations. 

Our clients come from virtually all corners of the globe, and we believe having a diverse workforce enhances our ability to advise our varied client base.  Moreover, we firmly believe that combining team members of different backgrounds, experiences, and perspectives facilitates creativity and innovative legal solutions and strategies for any client, regardless of location.  

Leydig has strived to develop a collaborative, supportive, and respectful environment that increases the participation and contribution of all employees.  We embrace different opinions and varied backgrounds, which we believe provide fresh perspectives and enhance our work product.  

We recognize that a more diverse and inclusive legal community as a whole is an ongoing process and of paramount importance. To this end, we continually engage in vigorous self-assessment to ensure that we contribute a dynamic approach to diversity and inclusion.

Diversity in IP Law Fellowship

Leydig offers a Diversity in IP Law Fellowship as part of our summer associate program for students finishing their 1L year. As a summer associate, the Diversity Fellow gains a wide range of IP experience in trademark and/or patent law. Leydig’s Fellows are assigned a mentor from the firm’s Diversity & Inclusion Committee. To learn more or apply for this position, visit the Law Students section of our Careers page.

Diversity and Inclusion Committee

Leydig has a diversity and inclusion committee that reports directly to the Board of Directors of the firm.  The members of the committee are partners, associates, and patent agents of varied backgrounds, with all five of the firm’s offices represented.  

The mission of the committee is to further the firm’s vision for a diverse and inclusive environment.  The committee meets regularly to identify, implement, enhance, and support various initiatives to promote diversity and inclusion within the firm and in the legal and business communities at large.  

The committee also collaborates with other firm committees, such as the recruiting, professional development, and business development committees, to enhance diversity and inclusion in the firm.

Examples of Initiatives for Diversity and Inclusion

The firm continually examines and enhances initiatives for diversity and inclusion.  Examples include:

  • Active recruitment of candidates with diverse backgrounds
  • Extensive mentoring programs and training 
  • Diversity training for all professionals
  • Prominent work assignments for all professionals
  • Sponsored diversity events include – INTA Women’s Power Breakfast, Chicago Women in IP (ChiWIP) Post-Holiday Annual Dinner Sponsorship, Managing IP Women’s Leadership Forum, Annual Women in IP Progressive Dinner hosted by IPLAC Women in IP, Northwestern University Pritzker Women of Color Brunch, Diversity, Inclusion & Self Care seminar
  • Various organizations attorneys/patent agents are engaged in include – Alliance for Women, Chicago Women in IP (ChiWIP), IPLAC Women in Law Committee, Volunteer tutor with Chicago Youth Programs, Women in Bio – Chicago region, National Association of Women Business Owners, Asian Practice Committee of Intellectual Property Owners Association (IPO), The Decalogue Society, SME (Formerly Society of Manufacturing Engineers) Education Foundation, Concordia Place, ChIPs

Affinity Groups

The firm has the following Affinity Groups to assist members in career development, networking and mentorship:

  • Asian American and Pacific Islander
  • Black/African American
  • Hellenic
  • Hispanic/Latino
  • Individuals with Disabilities
  • LGBTQ+
  • Women

Below is a list of just some of the clients whom Leydig, Voit & Mayer has had the privilege of serving in the area of intellectual property law. The firm represents clients in the fields of biotechnology, chemicals, financial services, mechanical design, pharmaceuticals, computers and software, electronics, manufacturing, medical devices, and consumer products.

  • Aetna
  • Agfa Gevaert N.V.
  • Akros Pharma, Inc.
  • American International Group, Inc. (AIG)
  • Astellas Pharma, Inc.
  • Cabot Corporation
  • Cabot Microelectronics Corporation
  • Caterpillar Inc.
  • Cobra Golf Incorporated
  • Cornell University
  • Discover Financial Services
  • DSM Desotech, Inc.
  • Dun & Bradstreet, Inc. (D&B)
  • Fresenius Kabi USA (formerly APP Pharmaceuticals)
  • GenVec, Inc.
  • Illinois Tool Works, Inc.
  • ImmunoGen, Inc.
  • Indiana University Research and Technology Corporation
  • L Brands, Inc.
  • Lupin Ltd.
  • Lupin Pharmaceuticals, Inc.
  • Molex Incorporated
  • Morgan Stanley
  • National Institutes of Health (NIH)
  • Osmotica Pharmaceutical
  • Pall Corporation
  • Perrigo Company
  • Samsung Electronics
  • Teva Pharmaceutical Industries, Ltd.
  • Teva Pharmaceuticals USA, Inc.
  • University of Pittsburgh
  • USG Corporation
  • Whirlpool Properties, Inc.

About Us

Ranked as Leading Law Firm
Chambers USA

World’s Leading Practitioners
IAM Patent 1000