Daniel M. Lechleiter



Dan helps clients navigate complex patent and technology-based disputes through litigation, licensing, and strategic counseling. He combines deep legal knowledge with a strategic but highly pragmatic approach in assisting clients to achieve their business objectives. Dan works with a diverse array of clients, from startup companies to major retailers, medical device manufacturers, and financial services institutions. He has successfully represented clients in federal courts throughout the United States, at both the trial and appellate levels, as well as in inter partes review and other post-grant proceedings before the Patent Trial and Appeal Board of the U.S. Patent and Trademark Office. Dan co-chairs Faegre Drinker’s Section 337 group, which focuses on patent litigation before the U.S. International Trade Commission.

A degreed mechanical engineer and registered patent attorney, Dan has litigated patent cases involving a variety of technologies, including computer software, apps and hardware for mobile devices, electronic payments and funds transfers, digital encryption, antipiracy watermarking for motion picture film, medical devices, laser ablation, vehicular airbags, recreational vehicles, consumer electronics, maternity and children's products, trampolines, police hardware, and industrial blast freezers, among others.

In addition to patent cases, Dan has represented clients in trademark, unfair competition and copyright disputes, as well as matters involving contract and antitrust claims.

Engineering Experience

Before attending law school, Dan worked as an undergraduate co-op, and later a mechanical engineer, in the Environmental Products Group of YSI Inc., where he was named a co-inventor on U.S. Patent No. 6,779,383 , "Wiper and Brush Device for Cleaning Water Quality Sensors." Prior to that, Dan completed a summer engineering internship with the Gas Turbine Engine Division of Allison Engine Company, now Rolls-Royce Corp.


Bar Admissions

U.S. Patent and Trademark Office

Court Admissions

U.S. Supreme Court
U.S. Court of Appeals for the Federal Circuit
U.S. District Court for the Northern District of Indiana
U.S. District Court for the Southern District of Indiana
U.S. District Court for the Eastern District of Texas
U.S. District Court for the Western District of Texas


The John Marshall Law School
J.D. cum laude, The John Marshall Review of Intellectual Property Law (managing editor) (2005)

University of Dayton
B.S. in Mechanical Engineering (2001)

Insights & Events

Other Perspectives
  • American Bar Association Intellectual Property Newsletter
    Quarterly contributing author, 2007-present
  • Practical Applications of the Attorney-Client Privilege for Savvy Corporate Counsel
    CLE co-presenter, Evansville Bar Association, November, 2017
  • Spider-man, Patents and Licensing: Revisiting Brulotte After 50 Years
    IU Robert H. McKinney School of Law, February, 2015

Leadership & Community

Professional Associations

  • Indianapolis Intellectual Property American Inn of Court — Barrister Member
  • Indianapolis Bar Association
  • Indiana State Bar Association — Special Committee on Lawyer Advertising, 2005-10 
  • American Bar Association
  • American Intellectual Property Law Association
  • Federal Circuit Bar Association
  • American Society of Mechanical Engineers

Civic Activities

  • Brebeuf Jesuit Preparatory High School — Chairman, Board of Trustees, 2019-21; Vice Chairman, 2018-19; Board member, 2011-17
  • The Children’s Museum of Indianapolis — Board of Trustees, 2017-present
  • The Penrod Society — Board of Directors, 2017-present; President and Board Chairman, 2017-18; Fair Chairman, 50th Annual Penrod Arts Fair, 2016; Society member, 2006-present
  • Indiana Historical Society — Board of Trustees, 2011-13
  • 2012 Indianapolis Super Bowl Host Committee Volunteer Co-Chair — Restaurant Super Service Committee, 2010-12
  • United Way of Central Indiana — Finance Committee of the Board of Directors, 2007-15; Emerging Leaders Steering Committee, 2008-10; Faegre Baker Daniels Campaign Co-Chair, 2006 and 2007
  • Hoosier Salon Patrons Association, Inc. — Board of Directors, 2010-13
  • Boy Scouts of America, Crossroads of America Council — Board of Directors, 2010-12


  • Best Lawyers® — Intellectual Property Litigation, 2019-21; Patent Litigation, 2021
  • Indiana Super Lawyers — Rising Star, Intellectual Property Litigation, 2010, 2011, and 2013-19
  • Junior Achievement of Central Indiana — Named winner of “Indy’s Best & Brightest” award out of 10 finalists in the Law category, 2017; top 10 finalist, 2016
  • Indiana Lawyer — Up and Coming Lawyer Award, 2015
  • Indianapolis Business Journal — Forty Under 40, Class of 2012
  • Stanley K. Lacy Executive Leadership Series — Class XXXIV, 2009-10
  • United Way of Central Indiana Leadership United, 2006-07
  • Giles Sutherland Rich Memorial Moot Court Competition, American Intellectual Property Law Association — Best Oralist Award and Regional Quarterfinalist, 2005

Awards Methodology

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