Insight

The Argument Against Self-Representation in Patent Cases

A look back at the 1983 Nilssen case, and what it means for patent law today.

Silhouette of women with magnifying glass and a yellow background with blue papers
JP

John Powers

August 29, 2018 12:31 PM

In 1983, the inventor Ole K. Nilssen, who had obtained 15 separate patents relating to compact fluorescent light bulbs and ballasts that convert power to operate gas discharge lamps, filed suit against a company for patent infringement. But the trial didn’t go his way. The court concluded that the 15 patents in suit were in fact unenforceable. The inventor had obtained his patents largely without the use of an attorney, which the judges found to be part of his downfall.

As the court stated in its decision, after “initially relying on attorneys to prosecute his patents, in 1983 Nilssen began prosecuting his own patent applications, including those resulting in the patents in suit, because he felt that his understanding of the subject matter was better than that of any attorney… Mr. Nilssen, while apparently gaining considerable knowledge of the patenting process, thought he didn't need professional patent help. The result of this case, regrettably, proves that he was wrong.”

There are no requirements that inventors have representation before the United States Patent and Trademark Office. That is, an inventor can file a patent application on his own behalf, just as a criminal defendant can waive his right to counsel and represent himself in court. Although this course of action is less expensive in the short term, and may even result in patent protection, it presents risks.

Words matter

When considering the challenges of drafting a successful patent, consider these two points. First, poor draftsmanship of the patent application and lack of experience in prosecuting patent applications can result in significant delays and potentially provide grounds to preclude issuing the patent. Second, the quality of an issued patent is only as good as the efforts that went into its preparation. Specifically, the size of the scope of protection allowed by a patent examiner, if any, depends upon the language presented in the patent application to describe the invention. As a result, there are many patents that provide less than optimal protection because the language presented is relatively limited.

The claims of a patent set the metes and bounds of what is protected. Just as a description of real property in a deed defines a physical space that a landowner owns, the claims of a patent define an intellectual space that an inventor has property rights to for a limited time. Compositions, articles, machines, or processes within the description of the intellectual space are protected, and those outside the description are not protected. When preparing a patent application, patent attorneys are tasked with crafting claims that define an intellectual space encompassing as many implementations of the invention as permitted by the law, which limits the size of the intellectual space to that which is useful, novel, non-obvious, and of patentable subject matter. Because there are an infinite number of implementations of any invention, a set of claims that describes finer features of an invention, and that meets the requirements of the law, will define an intellectual space entitled to patent protection.

However, a patent issued on such a set of claims will unfortunately not protect a large number of other implementations of the invention that do not include those finer features, but that are within the scope of the invented concept. Competitors in business encounter less difficulty designing around these patents, as opposed to those that define the invention in carefully crafted broad terms. In other words, poor draftsmanship exposes the inventor to allowing competitors to practice his invention, but not infringe his patent.

Deferring to the experts

While legal representation may seem costly in the beginning, the costs of having an improperly drafted patent can ultimately be higher in the end. A good patent attorney can assist the inventor in defining and describing the invention so that it is protected to the greatest extent possible. It’s usually in the inventor’s best interest to work with an attorney when seeking a patent, rather than learning the hard way.

---------------

An experienced patent attorney, John P. Powers has a solid track record of success with technology companies in acquiring patent rights for their inventions and, when needed, provides litigation support. His practice at Eckert Seamans Cherin & Mellott covers a wide variety of technologies including electrical switching apparatuses, medical devices such as respiratory therapy devices and therapeutic ultrasound technology, pharmaceutical packaging, machine tooling and related systems, and toys. Powers earned his B.S. in mechanical engineering from the University of Michigan and his J.D. from the University of Toledo College of Law.

Related Articles

How to Get a Patent


by Bryan Driscoll

A comprehensive guide to understanding patents, the application process and strategies to protect your invention in the U.S.

Illustration of a person with an idea next to a lawyer holding patent documents

Learn How to Value Your Company's IP Portfolio as a Source of Income with Patent Scorecarding


by Troy A. Groetken

It’s imperative that intellectual property counsel, especially those responsible for the protection of innovation in the electrical, chemical, pharmaceutical and life-science arenas, regularly audit their company’s IP portfolio. Here’s the best way to do it.

Folder with the words "PATENTED" on the front with a pencil and a paperclip on the desk

What Entrepreneurs Should Know About Intellectual Property


by Todd Fichtenberg

With the growing rates of entrepreneurs and startups during 2020, applications for EINs and intellectual property protections should grow proportionately.

Multiple DNA fingerprints of different colors

After 30 Years, Kevin R. Casey Looks Back on IP Law


by Best Lawyers

Kevin R. Casey, the 2019 "Lawyer of the Year" winner for IP Law in Philadelphia talks about his practice and career.

Kevin R. Casey, the 2019 "Lawyer of the Year" winner for IP Law in Philadelphia

Understanding the Constitutionality of Patent Law


by John Powers

Ideas can be stolen, just like the machines or products they were used to create.

One white ball goes to hit four black balls on a pendulum

The Short and Long Answers on Patent Applications


by John Powers

How long do patent applications take? Consider what you're filing for, and the strength of your proposal.

Calculator symbol on a yellow background with three businessmen jumping up and down with lightbulbs

Trending Articles

2026 Best Lawyers Awards: Recognizing Legal Talent Across the United States


by Jamilla Tabbara

The 2026 editions highlight the top 5% of U.S. attorneys, showcase emerging practice areas and reveal trends shaping the nation’s legal profession.

Map of the United States represented in The Best Lawyers in America 2026 awards

Gun Rights for Convicted Felons? The DOJ Says It's Time.


by Bryan Driscoll

It's more than an administrative reopening of a long-dormant issue; it's a test of how the law reconciles the right to bear arms with protecting the public.

Firearms application behind jail bars

2026 Best Lawyers Awards in Canada: Marking 20 Years of Excellence


by Jamilla Tabbara

Honoring Canada’s most respected lawyers and spotlighting the next generation shaping the future of law.

Shining Canadian map marking the 2026 Best Lawyers awards coverage

Revealing the 2026 Best Lawyers Awards in Germany, France, Switzerland and Austria


by Jamilla Tabbara

These honors underscore the reach of the Best Lawyers network and its focus on top legal talent.

map of Germany, France, Switzerland and Austria

Best Lawyers 2026: Discover the Honorees in Brazil, Mexico, Portugal, South Africa and Spain


by Jamilla Tabbara

A growing international network of recognized legal professionals.

Map highlighting the 2026 Best Lawyers honorees across Brazil, Mexico, Portugal, South Africa and Sp

How to Sue for Defamation: Costs, Process and What to Expect


by Bryan Driscoll

Learn the legal standards, costs and steps involved when you sue for defamation, including the difference between libel and slander.

Group of people holding papers with speech bubbles above them

Build Your Legal Practice with Effective Online Networking


by Jamilla Tabbara

How thoughtful online networking supports sustained legal practice growth.

Abstract web of connected figures symbolizing online networking among legal professionals

Algorithmic Exclusion


by Bryan Driscoll

The Workday lawsuit and the future of AI in hiring.

Workday Lawsuit and the Future of AI in Hiring headline

Blogging for Law Firms: Turning Content into Client Connections


by Jamilla Tabbara

How law firms use blogs to earn trust and win clients.

Lawyer typing blog content on laptop in office

Reddit’s Lawsuit Could Change How Much AI Knows About You


by Justin Smulison

Big AI is battling for its future—your data’s at stake.

Reddit Anthropic Lawsuit headline

How to Choose a Good Lawyer: Tips, Traits and Questions to Ask


by Laurie Villanueva

A Practical Guide for Your First-Time Hiring a Lawyer

Three professional lawyers walking together and discussing work

The 2026 Best Lawyers Awards in Chile, Colombia and Puerto Rico


by Jamilla Tabbara

The region’s most highly regarded lawyers.

Map highlighting Chile, Colombia and Puerto Rico for the 2026 Best Lawyers Awards

Common-Law Marriage in Indiana: Are You Legally Protected?


by Laurie Villanueva

Understanding cohabitation rights and common-law marriage recognition in Indiana.

Married Indiana couple in their home

Why Jack Dorsey and Elon Musk Want to 'Delete All IP Law'


by Bryan Driscoll

This Isn’t Just a Debate Over How to Pay Creators. It’s a Direct Challenge to Legal Infrastructure.

Elon Musk and Jack Dorsey standing together Infront of the X logo

AI Tools for Lawyers: How Smithy AI Solves Key Challenges


by Jamilla Tabbara

Understand the features and benefits within the Best Lawyers Digital Marketing Platform.

Legal professional editing profile content with Smithy AI

Alimony Explained: Who Qualifies, How It Works and What to Expect


by Bryan Driscoll

A practical guide to understanding alimony, from eligibility to enforcement, for anyone navigating divorce

two figures standing on stacks of coins