When a company’s value depends heavily on patents, trademarks, copyrights, software, data rights, or trade secrets, diligence usually turns into a very specific set of questions. Buyers and investors are not just asking whether the business “has IP.” They are asking whether the company actually owns it, controls it, can enforce it, and can keep using it after the deal closes.
That distinction matters. A patent that has lapsed, a trademark with a weak chain of title, a codebase built with unclear contractor assignments, or a trade secret that was never handled confidentially can change valuation, timelines, indemnity discussions, and sometimes the deal itself. The World Intellectual Property Organization’s guidance on IP diligence readiness frames the exercise in similarly practical terms: identify the assets, confirm ownership, and surface defects before the transaction gets expensive.
In this post you’ll learn the nine questions buyers and investors tend to ask when IP is a core asset, why those questions keep coming up, and where legal risk often hides. If you want a broader walkthrough of the process, it may help to start with this overview of how IP deal diligence typically works from ownership through encumbrances.
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This is usually the first question because almost every other diligence issue flows from it.
For patents and trademarks, buyers often look for a clean chain of title backed by signed assignments and recorded ownership updates. The USPTO’s Assignment Center exists for exactly this reason: parties can record transfers of patent and trademark ownership, and the public databases can then be searched to confirm recorded interests and ownership history. The USPTO also notes that maintaining a clear title to pending patent applications and patents depends on recording assignments and related documents with the agency’s Assignment Recordation Branch. See the USPTO’s patent assignment guidance here and trademark assignment guidance here.
In practice, buyers often compare:
For copyrights, the question often turns on whether the company obtained ownership in writing. The U.S. Copyright Office explains that a non-author organization can be named as claimant only if it obtained ownership of all rights in writing or by operation of law. Its recordation system is also used for transfers of copyright ownership and related documents. Those details matter for software companies, media businesses, and content-heavy startups. See the Copyright Office’s recordation overview here and claimant guidance here.
A surprising amount of deal friction comes from ordinary operational gaps: a founder formed the company after building the first version of the product, a contractor signed a services agreement but not an IP assignment, or an acquired subsidiary kept key filings in a legacy entity’s name. If you want to go deeper on this issue, it helps to read more about the ownership chain and other IP title issues that often shape deal risk.
Owning an IP asset on paper is one thing. Having an asset that is still enforceable, current, and properly maintained is another.
For patents, buyers often verify whether the rights are actually in force. The USPTO explains that maintenance fees are required to keep most utility and reissue utility patents in force, generally at 3.5, 7.5, and 11.5 years after grant, and that failure to pay can cause the patent rights to lapse. The agency also publishes lists of patents that have expired for nonpayment. That can turn a supposedly core asset into a historical artifact very quickly. See the USPTO’s maintenance-fee guidance here and general management page here.
Trademark diligence often focuses on whether registrations are live, whether required maintenance filings were made, whether specimens and ownership details line up with actual use, and whether there are pending office actions, oppositions, or cancellation risk. Even a registered mark can create concern if the filing history suggests gaps in use or ownership inconsistencies.