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Intellectual Property Solutions: Sell Patents, a Patent for Sale Service

Sell a Patent

Finally ready to sell a patent? To sell a patent, include patent number, and date of issue/ publication. Included: unlimited content and image uploads, unlimited time to sell a patent. No monthly subscriptions. No yearly subscriptions. Patent doesn’t sell? Pay nothing more. If there is a specific selling price please enter this amount. To buy more than one Sell a Patent listing, say 2, buy another listing. Post a patent for sale here on Princetonwww.net and join the Inventor revolution(SM)!

Sell a Patent with Confidence

Turn your invention into profit by connecting with real buyers. Whether your patent is granted or pending, our platform gives you visibility, guidance, and tools to make the sale.

Who Can Use This Page?

Patent holders (granted or pending, U.S. or international)
Inventors seeking to sell outright or license their IP
Startups or individuals with unique inventions

Why Sell a Patent?

Selling your patent gives you upfront capital and freedom to focus on your next idea. It's often easier than licensing, especially if you prefer a clean transfer of rights.

Sale vs Licensing

Sale: One-time payment, rights transferred.
License: Recurring payments, you keep ownership.

How to Prepare Your Patent for Sale

Verify ownership (check assignments and USPTO status). Prepare clear, plain-English summary of your invention.
Highlight market value, competitive advantage, and use cases. Collect key documents: patent claims, drawings, filing dates.
Decide what to share publicly vs what to protect (e.g. via NDA).

How We Help

Our service includes:

Listing your patent in our searchable directory. Visibility to buyers, investors, and companies
Basic template for outreach and negotiation tips. Email alerts for inquiries on your listing

Listing Fee: $300 (one-time)

Includes a forever listing, manual review, and featured promotion.

Steps to Get Listed

Fill out our submission form with patent details
Submit payment securely
We review and publish your listing (within 2 –3 business days)

Valuing Your Patent

We recommend you consider:

Development costs and legal fees
Market demand & industry trends
Patent life remaining & enforceability
Potential licensing income (if applicable)

Frequently Asked Questions

Can I list a patent application (not yet granted)?

Yes -but make it clear it's pending. Some buyers may prefer granted patents.

Can I list multiple patents?

Yes. Please contact us for bulk listing rates.

What if I already listed this on another marketplace?

No problem. Our goal is to increase your visibility.

Is this a legal service?

No. We are not a law firm and do not provide legal advice. You should consult an IP attorney before signing any sales agreements.

Why List with PrincetonWWW?

Founded in 1999 - trusted by inventors and entrepreneurs
Dedicated to real IP listings -no spam or auto-generated content
Flexible submission process with human review
We recovered our website after a cyber attack

Ready to List Your Patent?

Have questions? Contact us before you submit.

What Inventors Are Saying:

“I listed my invention here back in 2012 and received several serious inquiries within the first few months. Glad to see the site making a comeback.”

— D.L., Independent Inventor

“This site gave me a place to showcase my patented device when I had nowhere else to market it. It connected me to people I never would have reached on my own.”

— Anonymous, First-Time Patent Seller

“I’ve used a few platforms over the years, but this one actually felt geared toward inventors, not just lawyers. The submission process was simple and fair.”

— M.R., Inventor & Small Business Owner

Case Study: A Personal Mission to Help an Unmanned Airship Find Its Buyer

When I first launched PrincetonWWW, a local church friend confided in me about an invention she and her sister had been involved with years earlier — an unmanned airship developed by a Princeton, New Jersey company. Both had invested their hard-earned teacher salaries, hoping for a breakthrough.

Knowing my new venture was about connecting inventors to real buyers, she asked if I could help get the invention in front of potential investors.

Soon after featuring the airship on PrincetonWWW, a serious buyer from Pennsylvania contacted us with a multi-million dollar offer.

Excited, I passed the information to my friend, who shared it with the inventor. But, sadly, the inventor chose not to pursue the sale and asked that the listing be removed.

Tragically, my friend’s sister passed away young, and my friend herself eventually entered a nursing home, leaving the future of the invention uncertain.

This experience was a stark reminder that while our platform can create opportunities, turning those opportunities into success requires timely action, trust, and support.

At PrincetonWWW, our mission is to help inventors not only gain visibility but also navigate the complex journey to monetization — because every invention deserves a chance to fulfill its potential.

This story serves as a heartfelt reminder: seize opportunity when it knocks, and let us help you take the next step.