Who owns the intellectual property after a business sale?

Intellectual property is often the most valuable thing in a small business and the thing most likely to be handled carelessly in the purchase agreement. A brand name, a customer list treated as a trade secret, proprietary software or a domain name each has its own ownership mechanics, and a general clause selling “the business and its assets” does not necessarily catch all of them.

Structure decides whether IP moves automatically

A share sale carries IP ownership along with everything else the corporation owns, because ownership of the company itself is what changed hands, not ownership of any individual asset. An asset sale requires each piece of intellectual property to be scheduled and specifically assigned, and IP left off that schedule can end up staying with the seller by default, whether or not that was anyone’s intention.

Registered rights need their own paperwork

A trademark or patent registered with a government office is not reassigned just because a private purchase agreement says it is sold — the assignment typically has to be recorded with the relevant registry to be effective against third parties. Sellers and buyers who treat the purchase agreement as sufficient on its own sometimes discover, later, that the registry still lists the seller as owner.

What is easy to miss

• Domain names and social media accounts, which are often registered personally rather than corporately
• Software licensed from a third party rather than owned outright, which may not be transferable at all
• Unregistered trademarks and trade dress, which depend on use rather than a certificate
• Work created by contractors, where ownership depends on the contract that engaged them, not on payment

Due diligence is where this gets caught

A buyer’s due diligence should confirm not just that the business uses a given trademark, domain or piece of software, but that the seller — or the corporation being sold — actually owns it cleanly, free of licences, disputes or third-party claims. Confirming ownership before closing is far cheaper than discovering afterward that the brand the buyer thought it bought belongs to someone else.