Maryann Maas, Partner


Maryann's background as a patent attorney with over 30 years of experience has given her exceptional skills in patent preparation and prosecution, counseling  and issue identification.  She is a highly motivated, performance-driven, and analytical professional with experience in a variety of industries.  Maryann is adept at resolving various legal matters efficiently with sound judgment and decision-making abilities, while maintaining a high level of integrity and confidentiality.   She is an articulate communicator and expert at providing effective legal advice to clients regarding complex risks and exposures in simple terms. 

Professional Experience

As Chief Patent Counsel for Patent Acquisitions for Honeywell UOP in Des Plaines, Illinois for the last 10 years, Maryann managed a team of patent attorneys and legal assistants with a docket of over 1000 active patents.  Prior to that, she was Senior Patent Counsel for 20 years at UOP.  

Specialties, Academics and Law Admissions

Specialties in Technology

• Oil and gas refining

• Catalysis and processing

• Chemistry

• Olefins


Academic Background

J.D. John Marshall Law School, Magda Cum Laude

John Marshall Law Review

University of Illinois at Urbana-Champaign

B.S. Chemistry

Law Practice Admissions


United States Patent and Trademark Office



Patent Attorney 

Paschall & Maas Law Office, LLC 

Phone: 872-810-2993