Imagine acquiring a software company for $50 million. The product is strong, the team is talented, and the customer base is growing. Six months after closing, you discover that the core technology \u2014 the very thing you paid for \u2014 was developed using open-source components under a license that requires derivative works to be released publicly. Suddenly, your competitive moat has a hole in it.<\/p>\n
Scenarios like this happen. And in almost every case, they were preventable with thorough IP due diligence<\/strong> before the deal closed.<\/p>\n Whether you’re acquiring a company, investing in a startup, entering a joint venture, or negotiating a major licensing arrangement, intellectual property is no longer a footnote in the due diligence checklist. For most modern businesses, it’s the main event.<\/p>\n In this guide, we’ll cover what IP due diligence actually involves, why it’s become so critical, what specific areas must be examined, and how to structure the process for maximum coverage without derailing a deal timeline.<\/p>\n There’s a striking statistic that captures the shift in how we should think about business value: intangible assets \u2014 primarily intellectual property \u2014 now account for approximately 90% of the value of S&P 500 companies<\/strong>, according to analysis by Ocean Tomo. The global stock of intangible assets has grown to exceed $62 trillion.<\/p>\n That number represents a complete inversion of what we saw 40 years ago, when physical assets like factories, equipment, and inventory dominated balance sheets. Today, a company’s value is overwhelmingly in its patents, trademarks, trade secrets, proprietary software, and know-how.<\/p>\n This shift has direct implications for deal-making. When intangibles drive 90% of value, a buyer who doesn’t rigorously examine those intangibles is essentially making a $50 million decision based on 10% of the relevant information.<\/p>\n According to PwC research, 60% of CEOs plan to make at least one acquisition in the next three years. In that environment, the firms that conduct serious IP due diligence gain a distinct advantage \u2014 they know what they’re actually buying.<\/p>\n IP due diligence is not a single review \u2014 it’s a structured investigation across multiple IP categories, each with its own risk factors and legal considerations. Here’s what a comprehensive process must address.<\/p>\n For technology companies, the patent portfolio review is typically the most intensive component. It involves identifying all granted patents and pending applications, verifying ownership and assignment chains, assessing the validity and enforceability of key patents, evaluating coverage relative to the target’s actual products, and checking for any encumbrances like pledged patents or license-backs to prior employers.<\/p>\n A common mistake is assuming that a large patent portfolio equals strong protection. Volume isn’t the issue \u2014 quality and alignment with core products is. A portfolio of 200 patents that don’t cover the company’s actual revenue-generating technology is far less valuable than a portfolio of 20 well-crafted patents that do.<\/p>\n The patent review should also flag any patents that have been challenged \u2014 through IPR, inter partes reexamination, or district court litigation \u2014 because challenged patents often carry ongoing uncertainty about their scope and enforceability.<\/p>\n Trademarks protect brand value \u2014 and brand value is often the most commercially important intangible asset in consumer-facing businesses. The trademark review should cover all registered and unregistered marks, geographic coverage versus actual business operations, renewal status and maintenance requirements, any pending oppositions or cancellation proceedings, and whether the brand is actively being monitored and defended.<\/p>\n A trademark portfolio with gaps \u2014 markets where the company operates but lacks registration \u2014 represents direct risk. Competitors or bad actors in those markets may have already registered similar marks, creating barriers to the acquirer’s expansion plans.<\/p>\n Trade secrets are, by definition, secret \u2014 which makes them harder to evaluate but no less important. The IP due diligence review should examine what trade secret policies and confidentiality agreements the company has in place, whether employees and contractors signed appropriate NDAs and IP assignment agreements, and whether there’s been any misappropriation risk (e.g., a key engineer who came from a major competitor and brought knowledge that could trigger claims).<\/p>\n This area is particularly critical in deals involving AI and machine learning companies, where the training data, algorithms, and model architectures may be the entire basis of the company’s competitive position.<\/p>\n For software companies, a software composition analysis is essential. Open-source software is ubiquitous, but different open-source licenses carry very different obligations. GPL-licensed code used in a proprietary product can trigger a viral licensing obligation that effectively forces the product into open source. A careful review of what third-party software is embedded in the target’s codebase \u2014 and under what licenses \u2014 is non-negotiable in any software deal.<\/p>\n The IP due diligence review must identify all IP-related agreements: licensing agreements (inbound and outbound), development agreements with IP assignment provisions, government contracts with IP rights reservations, collaboration agreements with universities or research institutions, and any consent decrees or settlement agreements that restrict IP use.<\/p>\n A license that appears to give the target broad rights to use certain technology may not automatically transfer to the acquirer \u2014 some licenses are non-transferable without licensor consent. Discovering this after closing, when consent is no longer a bargaining chip, can be a very unpleasant surprise.<\/p>\n The stakes become concrete when you look at real deals. When Cisco acquired Splunk for $28 billion, a core driver of the deal was Splunk’s sophisticated data analytics IP \u2014 its ability to enhance Cisco’s security infrastructure was worth the premium. The IP due diligence in that deal had to validate whether Splunk’s technology could actually be integrated into Cisco’s ecosystem without triggering third-party license conflicts or patent disputes.<\/p>\n On the cautionary side, there are numerous examples of acquisitions that ran into IP landmines post-close. Smaller deals carry proportionally similar risks. A founder who built a product while employed elsewhere may have inadvertently assigned rights in that technology to their prior employer under a prior employment agreement. These situations aren’t theoretical \u2014 they’re discovered in IP due diligence processes every week.<\/p>\n The American Bar Association’s guidance on IP due diligence in M&A<\/a> recommends that IP counsel be involved from the earliest stages of due diligence, not brought in after the business team has already committed to a price.<\/p>\n One objection to thorough IP due diligence is timing. Deals move fast, and a comprehensive IP review can feel like a deal-slowing exercise. In practice, the opposite is true: a well-scoped IP review prevents the kind of post-close discoveries that actually blow up deals \u2014 or, worse, saddle buyers with liabilities they didn’t see coming.<\/p>\n The key is phasing the review efficiently. A first phase \u2014 typically conducted during preliminary due diligence \u2014 focuses on the highest-risk areas: patent validity for core products, trademark coverage gaps, software licensing issues, and key employee IP assignment status. This gives the buyer a risk profile within days rather than weeks.<\/p>\n A second phase, conducted after a term sheet is signed, covers the remaining areas in depth. By this point, the deal has enough momentum to support a more thorough review without the risk of analysis paralysis.<\/p>\n PerspireIP provides IP due diligence support tailored to deal timelines and risk profiles. Our team conducts patent portfolio assessments, trademark audits, and prior art searches that feed directly into your legal team’s due diligence report.<\/p>\n We work with both acquirers and targets \u2014 helping sellers prepare their IP house in order before a sale process begins, and helping buyers identify red flags and validate IP value before they commit. Our searches are delivered in formats built for legal and business review, not just IP specialists.<\/p>\n For clients navigating patent-specific risks, our patent invalidity search services<\/a> can evaluate the strength of key patents in a target’s portfolio. And for companies managing ongoing brand protection as part of their IP strategy, our trademark monitoring service<\/a> ensures that the brand assets you’ve acquired are actively defended. You can also explore our guide to building a strong IP portfolio<\/a> to understand how IP value is created from the ground up.<\/p>\n IP due diligence isn’t optional \u2014 not when intellectual property represents 90% of a company’s value and the stakes of getting it wrong are measured in millions. Every business deal involving IP-rich companies deserves a structured, expert review of what’s actually owned, what it’s worth, and what risks it carries.<\/p>\nWhy IP Has Become the Most Important Asset in Any Deal<\/h2>\n
What IP Due Diligence Actually Covers<\/h2>\n
Patent Portfolio Review<\/h3>\n
Trademark and Brand Asset Review<\/h3>\n
Trade Secret and Know-How Assessment<\/h3>\n
Copyright and Software Licensing Review<\/h3>\n
IP Agreements and Third-Party Rights<\/h3>\n
Real-World Lessons in IP Due Diligence<\/h2>\n
How to Structure IP Due Diligence Without Derailing a Deal<\/h2>\n
How PerspireIP Supports IP Due Diligence<\/h2>\n
Conclusion<\/h2>\n