Atty. Peter J. McAndrews
Peter J. McAndrews is a Shareholder at McAndrews and practices in all areas of intellectual property and complex technology law.
Profile Summary
About Peter J. McAndrews at a glance
Peter J. McAndrews is a trademark and ip attorney based in Chicago, Illinois, practicing at McAndrews, Held & Malloy LTD. Educated at University of Illinois Chicago (J.D., 1995) and Marquette University (B.S.). Recognitions include Best Lawyers in America — Litigation - Intellectual Property (2026), Best Lawyers in America — Patent Law (2026), and Best Lawyers in America — Trademark Law (2026). Serands clients in Chicago, IL and the surrounding metropolitan area.
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About
- Peter J. McAndrews is a Shareholder at McAndrews and practices in all areas of intellectual property and complex technology law
- He has been involved in all aspects of patent litigation, acquisition and counseling, involving a broad spectrum of electrical, biomedical and mechanical technologies
- Peter is a US Patent and Trademark Office-to-Appeals Court patent attorney and litigator who helps his clients secure intellectual property rights, make smart decisions with those rights and litigate, if necessary, to vindicate those rights
- Most recently, he has worked with clients with technologies in the fields of wireless and wireline communications, including cellular, digital subscriber line (DSL), fiber optics, and Wi-Fi
- computer engineering and computer science, including accelerators and cryptography
- and food and beverage packaging
- Peter is known for a rigorous fact- and science-based approach to his advocacy, grounded in his ability to thoroughly grasp relevant technologies in order to identify accurate, and therefore effective, arguments
- Rather than attempting to “sell a story” Peter believes that judges and juries, even if they fail to fully understand technical content, can sense when they hear the truth, and will react accordingly
- He has litigated patent disputes involving wired and wireless networks, cardiac pacemakers and defibrillators, thermal hand-held labelers and printers, digital television distribution systems, ophthalmic surgery systems, pneumatic actuators, paper-making machinery, cellular and IP telephony, fiber optics, Internet applications and computer software
- He has also litigated trademark, trade dress and unfair competition issues
- Peter also has significant experience in emerging areas of the law, such as inter partes reviews, or the quickly evolving law relating to litigation of standard-essential patents (e.g., patents that are necessarily infringed when a device complies with a standard such as a Wi-Fi or cellular or DSL standard) and a patent owner’s commensurate obligation to license such patents on (Fair), Reasonable and Non-Discriminatory, or (F)RAND terms
- Ranging from ultrasound medical equipment to semiconductors, Peter has managed the development of significant global patent portfolios and has prepared and prosecuted numerous patent applications for inventions in many diverse fields
- He advises clients regarding patent infringement/non-infringement and validity/invalidity for both utility and design patents
- He also performs due diligence investigations for the acquisition of multi-million-dollar companies
- Peter has received significant professional recognition for his abilities as a patent attorney
- He was recently ranked by Patexia as tenth in their nationwide list of “Top 50 Best Performing Attorneys representing Patent Owners” in inter partes review proceedings before the Patent Trial and Appeal Board with a 90.4% performance rating over the time period of July 2013-June 2018
- He also received a 100% performance rating when representing Petitioners
- Additionally, he has been recognized as a World Intellectual Property Review Leader for each year (2016-2019) that the list has been published
Practice Areas Explained
Peter J. McAndrews's Areas of Practice
Each practice area below reflects the types of cases Peter J. McAndrews handles, with a brief overview of what that area of law covers.
Peter J. McAndrews is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Illinois →
IP attorneys protect inventions, brands, and creative work through patent prosecution, trademark registration, copyright, and trade-secret enforcement.
Peter J. McAndrews is one of 106,079 ip attorneys indexed nationally. Browse ip attorneys in Illinois →
Jurisdictional Context
Why local counsel matters in Illinois
Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.
Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.
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