Domestic and international patent counsel for broad range of products

Justin DeAngelis assists clients with their domestic and international patent portfolios, including patent preparation and prosecution, freedom-to-operate analyses and infringement analyses for design and utility patents. He is a well-established member of the design patent bar, having prosecuted hundreds of U.S. design patent applications in a wide variety of product categories. He also regularly:

• Counsels domestic and foreign clients on design rights and develops sophisticated design patent filing strategies.
• Advises on proper filing strategies while providing protections in cases where analysis points to infringement by competitors.
• Prepares, files and prosecutes utility patent applications, with direct knowledge in a variety of manufacturing and consumer product sectors.

With a mechanical engineering degree as his foundation, clients find Justin's technical training to be a strong complement to his legal knowledge.

Bar Admissions

• Illinois

Education

• Northwestern University, Kellogg School of Management, Certificate, Quarles & Brady Leadership Program (2025)

• Chicago-Kent College of Law - Illinois Institute of Technology (J.D., 2015)
  • Chicago Intellectual Property Colloquium, fellow
  • Journal of Intellectual Property, submissions editor
  • Giles Rich IP Moot Court Competition, member
  • Intellectual Property Law Society, member

• University of Wisconsin - Madison (B.S., 2011)
  • Mechanical Engineering

• "Drafting skills"
• "Early New Product/Patent Steps Receive More Protection with Ruling"
• "Year In Review: Trademark, Trade Secret, Patent, Copyright, Design Rights"
• "Year In Review: Trademark, Trade Secret, Patent, Copyright, Design Rights"
• A Quick Dive Into the Upcoming Changes to Chinese Design Patent Law
• Another Step Forward: Further Updates on In re Maatita and Design Definiteness
• Design Patent Drafting Strategies in View of Apple v. Samsung
• Design Patents are Heating Up at the Federal Circuit, Again
• Flawless Legs and a Shaved Head? An Ordinary Observer Can Tell the Difference
• Implications of Prosecution History Estoppel for Design Patents Clarified by CAFC
• IP Attorneys Justin DeAngelis, Christian Stahl and Johanna Wilbert Offer Lessons from lululemon v. Peloton Trademark Case
• Mason Baranczyk, Justin DeAngelis, James Aquilina and Nicholas Schmidbauer Author IP Watchdog Article on Divisive Design Patent Case and Design Definiteness
• Protecting the Product: Furniture
• Protecting the Product™: Software
• Protecting the Product™: Typefaces and Fonts
• R.I.P. Mr. Rosen: Federal Circuit Upends Longstanding Design Patent Obviousness Test
• Recap of 2024 U.S. Design Patent Drama: Here's What We Know Now
• Recent Changes to International Design Law
• Recent PTAB Guidance on Permissible Drawing Amendments for U.S. Design Applications
• Recent Trends in Article of Manufacture of Design Claims: A Modern Digital Popularity Contest
• U.S. Design Patent Enablement and Definiteness Requirements in view of In re: Maatita
• Uncertainty Ahead if Design Patent Obviousness Test is Abrogated by en banc CAFC
• When "Functionality" Swallows Design Rights: A Caution for Design Patent Applicants
• While There is an Active Utility Application, There is Design Hope

Seminar

• 2019 AIPLA Annual Meeting
• Chicago Bar Association's Intellectual Property Law Committee Meeting
• Mexico, U.S., Canada, LATAM & E.U. on the protection of Emerging Technologies
• Patent, Trademark and Copyright Basics for New Attorneys and General Practitioners
• Protecting the Look: Strategies in Modern Design Patent Law
• Recent Developments in Design Patent Law
• Report from the Front Line: Federal Circuit Decisions | USPTO Design Day 2019
• The Power of Design: Incorporating Design Protection into your IP Portfolio
• Year In Review: Trademark, Trade Secret, Patent, Copyright, Design Rights
• Year In Review: Trademark, Trade Secret, Patent, Copyright, Design Rights