Understanding and Mitigating the Impact of Patent Trolls

When a company receives a legal notice claiming patent infringement on technology it built from scratch, the natural reaction is confusion – and then dread. But what if the entity suing never made, sold, or used the patented technology at all? That’s the hallmark of a patent troll: an entity that weaponises the patent system not to protect innovation, but to profit from it. For businesses, especially startups and SMEs, understanding this threat and knowing how to counter it is no longer optional – it’s a core part of IP strategy.

What is a patent troll? 🔗

A patent troll – formally called a Non-Practicing Entity (NPE) or Patent Assertion Entity (PAE) – is an individual or company that acquires patents without any intention of developing or commercialising the underlying technology. Instead of creating products or services, their entire business model rests on enforcing patent rights through litigation or by demanding licensing fees from companies that may be unaware they are even near the claimed patent boundary.

The term itself originates from Norwegian folklore – a troll that lurks under a bridge and extracts a toll from travellers who wish to cross. The analogy fits precisely: patent trolls remain dormant, often acquiring patents from bankrupt companies or cash-strapped inventors, waiting for an operating company to independently develop similar technology – and then striking.

It is important to distinguish NPEs from all non-practicing entities. Universities, research institutions, and individual inventors who hold patents but lack manufacturing capacity are also technically non-practicing. The distinguishing factor for a true patent troll is intent – no interest in working the patent, only in monetising it through legal pressure. The U.S. Federal Trade Commission uses the term Patent Assertion Entity specifically to draw this line.

How the patent troll business model works 🔗

The typical troll strategy follows a predictable playbook. First, an NPE acquires a patent portfolio – often for a fraction of its potential litigation value – targeting patents that are broad, vague, or cover fundamental processes in fast-moving sectors like software, telecommunications, and e-commerce. These characteristics are deliberate: vague patent language makes it easy to claim infringement against multiple defendants simultaneously.

Once a target is identified – usually a company that has independently developed similar technology – the troll files suit or issues cease-and-desist notices. The litigation threat is calculated: the cost of fighting a patent case in court often far exceeds the cost of settling. In the United States, defending against a patent infringement suit typically costs $1 million or more before trial, and over $4 million for a full defence – even when the defendant ultimately wins. Most companies, particularly small ones, settle rather than fight.

Trolls almost exclusively target operating companies. Since they produce nothing themselves, defendants cannot countersue for patent infringement – there is no product to point at. This asymmetry is fundamental to the troll’s leverage.

The impact on innovation and business 🔗

The effects of patent trolling extend well beyond the individual companies targeted. These entities leverage patents not to promote technological advancement but to extract settlements, draining resources that could otherwise fund R&D, product development, and job creation.

The chilling effect on R&D 🔗

Research published in the Strategic Management Journal (2024) found that firms targeted by NPE lawsuits subsequently shifted their innovation activities toward in-house technologies to reduce exposure to future claims. More strikingly, even firms that were not sued – but operated in adjacent technology spaces – moved their innovation activities away from areas facing NPE litigation risk. The net effect is that entire technology sectors can be stunted by the litigation shadow cast by a single active troll.

The patent thicket problem 🔗

In sectors like software and telecommunications, products routinely involve hundreds of overlapping patents. Patent trolls deliberately target these thickets, where even a well-resourced company cannot navigate every claim. A single product may attract infringement assertions from multiple NPEs simultaneously, compounding litigation costs and distracting management from core business operations.

Disproportionate impact on startups and SMEs 🔗

Large corporations can absorb litigation costs and maintain in-house IP teams. Startups and small businesses typically cannot. In the United States, nearly 80% of defendants in patent infringement cases are small or medium-sized businesses – precisely because they make easier targets. For a startup with limited runway, even a frivolous infringement claim can be existential.

The Indian legal landscape: a natural deterrent? 🔗

India’s patent framework provides several structural features that make outright patent trolling significantly harder than in the United States, though the threat is not absent.

The compulsory working requirement 🔗

One of the most effective deterrents is India’s insistence that patents be commercially worked within India. Under Section 146(1) of the Patents Act, 1970, the Controller of Patents can require a patentee to submit information on whether and to what extent the patent is being commercially used in India. A patent that is not worked in India within three years of grant can become grounds for a compulsory licence application under Section 84 of the Patents Act.

This provision directly undermines the troll model. A troll that acquires a patent and sits on it – the classic NPE strategy – risks losing exclusive control if a third party successfully applies for a compulsory licence. India’s landmark compulsory licensing case, Natco Pharma v. Bayer Corporation (2012), demonstrated this principle in action: when Bayer’s life-saving cancer drug was not being worked in India and was unaffordably priced, the Patent Office granted Natco Pharma a compulsory licence, allowing manufacture at a fraction of the original price.

Pre-grant and post-grant opposition 🔗

India allows patents to be challenged both before and after grant. Even if a troll acquires an already-granted patent, that patent can still be challenged on grounds such as lack of novelty or inventive step under Section 64(1) of the Patents Act. This creates an ongoing legal vulnerability for weak troll patents that would likely survive unchallenged in systems with fewer post-grant mechanisms.

Exclusion of software patents 🔗

Software is among the most fertile hunting grounds for patent trolls globally. India’s Patent (Amendment) Act, 2005 removed patent protection for software as such, substantially reducing the surface area available for software-based trolling – a category that drives the bulk of NPE litigation in the United States.

The Spice Mobiles precedent 🔗

In Spice Mobiles Ltd. v. Somasundaram Ramkumar, the Intellectual Property Appellate Board (IPAB) recognised the patentee as a troll, revoked the patents for lack of novelty and inventive step, and imposed costs for frivolous filing. The IPAB also cautioned the Controller General of Patents to be alert to troll activity – an early judicial signal that Indian tribunals take a dim view of opportunistic patent assertion.

Strategies to counter patent trolls 🔗

Even with India’s structural protections, businesses – particularly those with global operations or technology-heavy products – need proactive strategies. The following approaches are used globally and are increasingly relevant for Indian companies navigating cross-border IP risk.

Joining defensive patent aggregators 🔗

Defensive patent aggregators are organisations that pool resources to buy up patents before trolls can acquire and weaponise them. The core advantage is collective action: NPEs attack companies individually, while aggregators allow companies to respond collectively, distributing both costs and risk.

The most prominent example is RPX Corporation, founded in 2008. RPX purchases high-risk patents on the open market before NPEs can acquire them, then licenses those patents to its member companies, effectively neutralising the threat. Member fees range from $35,000 to several million dollars annually depending on company size, but the cost is routinely far lower than defending even a single patent lawsuit.

Other models include the LOT Network, which operates on a cross-licensing principle: if a member’s patent is ever sold to an NPE, all other LOT Network members automatically receive a royalty-free licence to that patent – removing its litigation value in troll hands. The Open Invention Network (OIN) operates similarly, focused specifically on protecting Linux-related technologies, and is free to join.

Preemptive patent acquisition 🔗

A company that builds its own patent portfolio around its core technologies creates a defensive moat. Even if a troll asserts a patent, the defendant can point to prior art, file inter partes challenges, or use its own portfolio in cross-licensing negotiations. In India, establishing patent pools in high-tech sectors like software, telecommunications, and pharmaceuticals could help local companies shield themselves from NPE litigation as the innovation ecosystem matures.

Preemptive acquisition is also valuable at the individual company level. Identifying which technology areas a company operates in, monitoring patent filings in those spaces, and acquiring or licensing key patents before they fall into hostile hands is a forward-looking risk management practice increasingly adopted by technology companies.

Challenging patent validity 🔗

Trolls depend on the credibility of their patents. Many NPE patents are overly broad, lack genuine novelty, or were granted due to inadequate examination. Organisations like Unified Patents specifically focus on challenging NPE-held patents through inter partes reviews and post-grant proceedings, attacking the troll’s core asset directly. In India, the post-grant opposition mechanism under the Patents Act serves a similar function and is underutilised by most targeted companies.

Advocating for IP law reform 🔗

At the systemic level, reducing patent trolling requires improving patent quality at the examination stage. Tightening the standards and norms for granting patents, reducing ambiguity in patent claims, and establishing specialised adjudicatory bodies with technical expertise are all reforms that would reduce the stock of weak patents available for trolls to acquire.

In the United States, the eBay v. MercExchange (2006) Supreme Court decision significantly curtailed the ability of NPEs to obtain permanent injunctions – removing a key piece of leverage that trolls used to force settlements. Comparable judicial and legislative clarity in India, especially as its technology sector grows, would further strengthen the country’s resistance to trolling.

A nuanced view: when NPEs aren’t purely harmful 🔗

It would be an oversimplification to treat every NPE as a predator. There are documented cases where patent trolls have assisted small inventors and startups in asserting their patents against large corporations like Google and Microsoft – companies that would otherwise be able to absorb or ignore infringement claims made by under-resourced inventors. In that narrow sense, NPEs occasionally perform a legitimate intermediary function, much like IP litigation financiers.

The problem is not the existence of non-practicing entities per se, but the systematic use of weak, vague patents to extract settlements from companies that have done nothing wrong. Policy and business strategy should target that specific behaviour – not all patent assertion broadly.

What do you think? India’s patent framework already contains several built-in deterrents against trolling – but as Indian startups increasingly seek global patent protection, exposure to NPE litigation in jurisdictions like the United States rises sharply. Should Indian companies proactively join international defensive patent networks as a standard part of their IP strategy? And given the growing importance of AI and green technology patents, do you think India’s current legal framework is equipped to prevent the next wave of patent trolling in these emerging sectors?

References

1. https://www.legalserviceindia.com/legal/article-18168-patent-trolls-and-their-impact-on-innovation-.html
2. https://excelonip.com/defending-innovations-against-patent-trolls-why-india-has-an-upper-hand/
3. https://www.mondaq.com/india/patent/1424568/patent-trolls-and-their-impact-on-innovation-and-economic-growth
4. https://en.wikipedia.org/wiki/Defensive_patent_aggregation
5. https://www.ijariit.com/manuscripts/v10i5/V10I5-1196.pdf
6. https://sms.onlinelibrary.wiley.com/doi/full/10.1002/smj.3606
7. https://www.intepat.com/blog/patent-trolls-an-indian-perspective/
8. https://indiankanoon.org/doc/799603/
9. https://ssrana.in/ip-laws/patents/compulsory-licensing-patents-in-india/
10. https://csipr.nliu.ac.in/patent/patent-trolling-in-india-the-dark-side-of-intellectual-property-law/
11. https://dev.americanbar.org/groups/intellectual_property_law/publications/landslide/2016-17/march-april/stop-patent-troll-armageddon-use-defensive-aggregators/
12. https://d3.harvard.edu/platform-rctom/submission/rpx-corporation-first-defense-against-patent-trolls/
13. https://www.intepat.com/blog/patent-trolls-navigating-the-fine-line-between-innovation-and-exploitation-in-indias-legal-landscape