Share on Facebook
Share on Twitter
Share on LinkedIn
By J.D. Houvener
Patent Attorney and Founder

Understanding Co-Inventorship: Who Should Be Listed as the Primary Inventor?

When it comes to filing patents involving multiple inventors, the question often arises: Who should be listed as the primary inventor? While the answer may seem straightforward, determining the primary inventor can involve nuanced considerations. Let’s unpack this process and understand how co-inventorship is handled in the patent world.


What is Co-Inventorship?

In the patenting process, all individuals who contribute to the conception of the claimed invention are considered co-inventors. According to the Manual of Patent Examining Procedure (MPEP), all co-inventors must be listed in the patent application. This is a legal requirement to ensure that credit is appropriately assigned.

However, the order in which inventors are listed, and specifically who is named as the primary inventor, can become a point of contention. So, how is this decision made?


Determining the Primary Inventor

The primary inventor is typically the person who made the most significant contribution to the invention. This could be the individual who conceptualized the core idea or whose work represents the majority of the invention’s unique claims. Here’s how this process unfolds:

  1. Focus on the Claimed Invention: The primary inventor is determined based on contributions to the actual claims of the patent application. These claims define the invention’s scope and distinguish it from prior art.
  2. Documenting Contributions: If there’s disagreement among co-inventors, a constructive approach is to have each inventor document their specific contributions in a preliminary invention disclosure. This document can serve as a foundation for deciding the order of inventors.
  3. Role of the Patent Attorney: Patent attorneys often mediate in these discussions. They analyze the inventors’ contributions to determine whose input aligns most closely with the claims of the patent.
  4. Ego vs. Legal Reality: While being listed as the primary inventor can be an ego boost, all inventors share equal rights to the patent. Each co-inventor has the right to exclude others from making, using, or selling the patented invention.

When Disputes Arise

In rare cases, co-inventors may strongly disagree about the order of inventorship. If this happens, there are a few potential resolutions:

  • Independent Counsel: Inventors may seek separate legal representation to advocate for their individual rights.
  • Mediation by the Patent Attorney: The attorney can work with the inventors to reach a consensus.
  • Company Assignment: Often, inventors assign their rights to a company. In such cases, the patent attorney represents the company rather than individual inventors, which can streamline decision-making.

Why Does the Order Matter?

For practical purposes, the order of inventors on a patent is less about legal significance and more about recognition. The first-named inventor often receives the most attention and credit for the invention. However, it’s important to emphasize that all listed inventors share equal rights under the patent.


Best Practices for Co-Inventors

  1. Communicate Early: Start discussions about inventorship roles early in the process.
  2. Maintain Clear Records: Keep detailed records of contributions to the invention.
  3. Work with a Trusted Patent Attorney: An experienced attorney can help navigate the complexities of co-inventorship and ensure everyone’s contributions are accurately represented.

Ready to Take the Next Step?

If you have an invention idea and are considering filing a patent, Bold Patents Law Firm is here to help. Whether you’re an individual inventor or part of a team, we provide expert guidance to ensure your rights are protected.

📥 Download our FREE Inventor’s Kit: This comprehensive resource includes:

  • A digital copy of Bold Ideas: The Inventor’s Guide to Patents
  • Step-by-step guidance on patent searches and applications
  • Insights into patent monetization strategies

👉 Get your free kit today!

Don’t wait—protect your big idea and go bold with your innovation!


Final Thoughts

Co-inventorship can be complex, but with open communication and the right legal support, it doesn’t have to be a roadblock. Whether you’re determining the primary inventor or navigating other patent-related questions, having a clear strategy is key to success.

Ready to make your idea a reality? Book a free discovery call with our experienced patent attorneys today! Start your journey here: https://boldip.com/contact/.


By understanding the nuances of co-inventorship, you can ensure that your invention gets the recognition—and protection—it deserves. Go big. Go Bold.

About the Author
J.D. Houvener is a Registered USPTO Patent Attorney who has a strong interest in helping entrepreneurs and businesses thrive. J.D. leverages his technical background in engineering and experience in the aerospace industry to provide businesses with a unique perspective on their patent needs. He works with clients who are serious about investing in their intellectual assets and provides counsel on how to capitalize their patents in the market. If you have any questions regarding this article or patents in general, consider contacting J.D. Houvener at https://boldip.com/contact/