HomeLaw & LegalIntellectual PropertyWhat is Patent Troll?
Law & Legal·2 min·Updated Mar 12, 2026

What is Patent Troll?

Patent Troll

Quick Answer

A patent troll is a person or company that buys patents, often not to create products, but to sue others for infringement. They profit by threatening legal action against businesses that may unintentionally use patented technology.

Overview

A patent troll typically acquires patents without the intention of developing or selling products based on those patents. Instead, they focus on enforcing their patent rights against other companies, often demanding licensing fees or threatening lawsuits. This practice can create a chilling effect on innovation, as companies may hesitate to develop new technologies for fear of legal repercussions. The way patent trolls operate often involves targeting smaller businesses that may not have the resources to fight a legal battle. For example, a small startup might receive a demand letter from a patent troll claiming that their product infringes on a patent. Faced with the high costs of litigation, the startup may choose to settle, paying a fee to avoid a potentially lengthy and expensive court case. Understanding the role of patent trolls is important in the context of intellectual property because it highlights the challenges faced by genuine innovators. While patents are intended to protect inventors and encourage creativity, the actions of patent trolls can undermine this goal by prioritizing profit over actual innovation. This issue has led to discussions about patent reform and the need for a balance between protecting intellectual property and fostering a healthy environment for technological advancement.


Frequently Asked Questions

Patent trolls are primarily motivated by profit. They acquire patents and then seek to enforce them against other companies, often targeting those who may not have the means to defend themselves in court.
Businesses can protect themselves by conducting thorough patent searches before launching new products and by seeking legal advice if they receive a demand letter. Additionally, companies can consider joining forces with others to share resources and knowledge in defending against potential lawsuits.
While there are no specific laws that outright ban patent trolling, there have been efforts to reform patent laws to make it harder for trolls to operate. Some proposed changes include requiring greater transparency in patent ownership and increasing the burden of proof on those filing lawsuits.