Two companies agree to merge. The target company has built what appears to be a valuable technology platform — significant revenue, a growing customer base, a portfolio of patents. The deal looks solid. Then, three months after closing, the acquirer discovers that half the patents were filed with defective assignments, two key licenses have change-of-control provisions that were never triggered, and a core piece of software incorporates open-source code with incompatible licensing terms. The $200 million acquisition just became a $200 million problem.
This scenario plays out more often than most deal-makers want to admit. The culprit is almost always insufficient IP due diligence. In this guide, we’ll explain what IP due diligence covers, why it’s non-negotiable in today’s deal environment, and how thorough IP analysis protects both buyers and sellers at every stage of a transaction.
What Is IP Due Diligence?
IP due diligence is the systematic process of identifying, analyzing, and evaluating an organization’s intellectual property assets and liabilities in the context of a proposed transaction. It’s a critical component of any merger, acquisition, joint venture, licensing deal, investment, or financing round where IP value is material to the deal.
The scope of IP due diligence typically covers patents, trademarks, copyrights, trade secrets, software licenses, domain names, and IP agreements (including assignments, licenses, and employee/contractor IP agreements). But it goes beyond simply listing assets — a thorough IP due diligence process evaluates ownership validity, freedom to operate, competitive significance, and risk exposure.
Consider what’s at stake. According to research published by the American Bar Association, intangible assets — IP rights chief among them — now represent approximately 90% of the value of companies in the S&P 500. The global value of intangible assets has exceeded $62 trillion. When IP is the primary driver of deal value, failing to assess it thoroughly is not a minor oversight. It’s a fundamental failure of the deal process.
Global M&A activity totaled $4.8 trillion in 2025 — the second-highest year on record, according to deal market analysts. With deal volumes at these levels, and with IP forming the backbone of so many transactions, the demand for rigorous IP due diligence has never been greater.
Why IP Due Diligence Matters: The Risks of Getting It Wrong
A 40-year analysis of 40,000 M&A transactions found that between 70% and 75% of deals fail to deliver expected value — with inadequate pre-deal analysis consistently identified as a primary cause. IP issues are a major contributor to this failure rate, and they manifest in several specific ways.
Ownership defects are more common than buyers expect. A company may list patents as owned assets, but on closer examination, the assignments from inventors were never properly executed, or a prior employer has a competing ownership claim based on the inventor’s employment contract. These defects can be cured — but only if discovered before closing, when the seller has both the incentive and the leverage to fix them.
License agreement landmines are another frequent problem. Licenses granted to third parties may restrict what the acquirer can do with the technology. Change-of-control provisions in licenses can trigger termination rights, royalty rate increases, or sublicense restrictions that fundamentally alter the economics of the deal. Only a thorough IP due diligence review of every material license agreement will surface these risks.
Open-source software compliance has become increasingly significant, particularly in technology deals. If a target company’s products incorporate open-source code under copyleft licenses like GPL, there may be obligations to disclose and license proprietary source code — a potentially devastating issue for companies whose value rests on proprietary software.
The American Bar Association’s guidance on IP due diligence in M&A identifies trade secret protection as a growing area of concern — particularly with remote work, contractor relationships, and AI tools creating new vectors for inadvertent trade secret disclosure.
The IP Due Diligence Process: What a Thorough Review Covers
A professional IP due diligence engagement is structured around six core areas:
1. Patent Portfolio Assessment
Every patent and patent application is reviewed for ownership chain integrity, prosecution history, maintenance fee status, claim scope, and potential vulnerability to invalidity challenges. The quality and enforceability of the portfolio — not just its size — is what matters to a sophisticated buyer. A portfolio of 50 weak or narrowly-claimed patents is worth far less than 10 strong ones with broad, defensible claim coverage.
2. Trademark and Brand Asset Review
Trademark registrations are verified for proper ownership, renewal status, and actual use in commerce. Unregistered marks are identified and assessed. Domain names and social media handles are inventoried. Geographic scope of brand protection is mapped against the company’s actual and planned commercial activities. As part of IP due diligence, trademark monitoring services may be deployed to assess whether existing brands face active threats.
3. Copyright and Software License Compliance
Software code bases are reviewed for open-source component identification and license compliance. Third-party content licenses are reviewed for scope and transferability. Work-for-hire documentation for contractor-developed content is verified. Copyright registration status is assessed.
4. Trade Secret Inventory and Protection Assessment
Trade secret IP due diligence examines whether the company has identified its trade secrets, implemented reasonable protection measures (access controls, confidentiality agreements, employee training), and maintained documentation sufficient to prove trade secret status if challenged. With the rise of AI tools in the workplace, this area requires particular attention in modern deals.
5. IP Agreement Review
All IP-related agreements — licenses (inbound and outbound), assignments, development agreements, NDAs, and joint development agreements — are reviewed for material terms, change-of-control provisions, exclusivity arrangements, territorial restrictions, and assignability. This review often surfaces the most significant risks in a deal.
6. Freedom-to-Operate Assessment
For technology companies, an IP due diligence process often includes a freedom-to-operate analysis: does the target company’s technology infringe any third-party patents? This is particularly critical in industries with dense patent landscapes. Learn more about how this works in our detailed guide to freedom-to-operate patent searches.
Real-World Lessons: When IP Due Diligence Saved (or Sank) Deals
The stakes in IP due diligence are illustrated by deals that went wrong — and right. When Johnson & Johnson acquired Shockwave Medical for $13.1 billion in 2024, the deal’s success hinged on extensive IP due diligence spanning a portfolio of significant cardiovascular technology patents. The acquirer needed to verify not just ownership, but claim breadth, prosecution history, and freedom to operate in a competitive market.
On the cautionary side, there are numerous documented cases of acquisitions where software license compliance failures were discovered post-closing. In one notable scenario, a technology acquirer discovered that the target’s core platform incorporated GPL-licensed code requiring source code disclosure — directly conflicting with the company’s proprietary software model. The acquirer faced either a costly reengineering effort or ongoing compliance risk. Neither outcome was reflected in the purchase price, because the IP due diligence had been inadequate.
Savvy investors and acquirers now treat IP due diligence as foundational — not an afterthought. According to KPMG’s deal market research, completing due diligence is cited as one of the top three obstacles to closing deals, alongside valuation agreement and regulatory clearance. The companies that execute deals efficiently are typically those who build IP due diligence into their deal process from day one. For more on how IP strategy integrates with business decisions, explore our guide on building an IP portfolio for startups.
How PerspireIP Supports IP Due Diligence Engagements
PerspireIP has deep experience supporting IP due diligence across a wide range of transaction types and technology sectors. Our team works alongside deal counsel and financial advisors to provide the IP-specific analysis that informs valuation, risk assessment, and deal structuring decisions.
Our IP due diligence services include patent portfolio analysis, trademark assessment, freedom-to-operate reviews, open-source compliance auditing, and IP agreement review. We deliver structured reports with clear risk ratings, actionable remediation recommendations, and executive summaries designed for deal teams and board-level review.
Whether you’re on the buy side looking to validate IP value, or on the sell side preparing your IP portfolio for scrutiny, PerspireIP can help you move through the process confidently. Contact our IP due diligence team today to discuss your specific transaction needs.
Conclusion: IP Due Diligence Is Not Optional
IP due diligence is the difference between understanding what you’re buying and discovering what you bought — after it’s too late to renegotiate. In a deal landscape where intangible assets represent 90% of S&P 500 company value, skipping or shortchanging IP due diligence is not a cost savings — it’s a risk transfer from the seller to you. With global M&A activity at $4.8 trillion and rising, the standard has never been higher. PerspireIP is ready to help your team meet it. Reach out today to start your IP due diligence engagement.
Frequently Asked Questions About IP Due Diligence
What is IP due diligence?
IP due diligence is the process of identifying, evaluating, and assessing the risks associated with a company’s intellectual property assets and agreements in the context of a proposed transaction. It covers patents, trademarks, copyrights, trade secrets, software licenses, and related agreements, with the goal of informing deal valuation and identifying material risks before closing.
When should IP due diligence be conducted?
IP due diligence should begin as early as possible in the deal process — ideally during initial negotiations, before the purchase price is finalized. Early IP due diligence allows risk findings to inform the deal terms and valuation, and gives both parties time to address material defects before closing. Post-closing discovery of IP issues is far more costly and legally complex to address.
What are the most common IP due diligence findings?
The most common material findings include: defective patent assignments (gap in the chain of title), restrictive change-of-control provisions in key license agreements, open-source software compliance issues, insufficient trade secret protection protocols, and trademark registrations that have lapsed or are narrower than assumed. Each of these can materially affect deal value or structure.
Is IP due diligence only relevant for technology companies?
No. While technology companies often have the most complex IP portfolios, IP due diligence is relevant across industries. Consumer brands, pharmaceutical companies, media businesses, food and beverage companies, and professional services firms all have valuable IP assets — trademarks, proprietary processes, trade secrets, content libraries — that require thorough assessment in any significant transaction.
How long does IP due diligence take?
The timeline depends on the size and complexity of the IP portfolio and the scope of agreements to be reviewed. A focused IP due diligence review of a startup or mid-market company can be completed in 2–4 weeks. Large enterprise transactions with extensive patent portfolios and complex licensing structures may require 6–8 weeks or more. PerspireIP works with deal teams to calibrate the scope and timeline to the specific transaction requirements.