Patent Complaints & Infringement: What Businesses Must Know
Learn how patent complaints work, what triggers them, how to respond, and the risks involved. Explore strategies for handling infringement disputes effectively. 5 min read updated on August 18, 2025
Key Takeaways
- Patent complaints often arise when a patent holder believes another party is infringing on their protected technology.
- Responding to a patent infringement complaint requires swift action—ignoring it can result in default judgments or injunctions.
- Defendants may pursue defenses such as non-infringement, invalidity of the patent, or prior use.
- Alternatives to litigation, such as licensing agreements or settlements, can save time and cost.
- Open patent systems, such as Tesla’s approach, show how loosening restrictions can drive innovation and sustainability.
- Understanding how patent complaints interact with innovation strategies (protective vs. open) is key for businesses.
The term "open patents" refers to the system of open patent licensing, which is when a patent owner gives licensing permission to a third party for the patented product. By sharing licensing rights (sometimes at no charge), the system is designed to foster innovation and aid companies in drawing in talented employees.
Patents and Future Sustainability
By the year 2050, if the world's population reaches its estimated 9.7 billion, people will need innovations that make full use of the planet's environmental and human resources. Certain sectors — water, energy, transport, and agriculture — are facing pressure to move into more sustainable consumption and production methods. Some barriers stand in the way of this necessary sustainability.
One such barrier lies in how ideas and inventions are managed in relation to creation and ownership. By taking a protective approach to intellectual property, existing technologies are protected and prolonged, and innovators enjoy the chance to benefit financially from their inventions. This protective approach makes it more difficult for people to develop and adopt newer, more sustainable technologies. There are methods being used now that seek to end the status quo and make key sectors develop systems that are more sustainable.
What Triggers Patent Complaints
Patent complaints are typically triggered when a patent holder believes another party has made, used, sold, or imported a product or process that infringes on their intellectual property rights. These complaints can stem from:
- Direct infringement – producing or selling an identical or very similar product.
- Indirect infringement – encouraging or enabling another party to infringe a patent.
- Willful infringement – knowingly using a patented invention without authorization, which can increase damages awarded in court.
Receiving a patent complaint is a serious matter. In the U.S., such cases are handled in federal district courts, and defendants must respond within strict timelines to avoid default judgments.
Tesla's Open Patent Approach
The electric automaker Tesla has been taking part in sustainability. In 2014, the company made the shocking announcement that it was taking part in the open source movement. It would start giving away patents at no charge.
Initially, Tesla had a portfolio that protected the company's technology. Tesla had concerns that once other, more established carmakers ramped up their electric car production efforts, it would be overwhelmed. This never actually happened. Instead, the electric car market stagnated at fewer than one percent of total car sales. Tesla then amended its strategy — instead of attempting to prevent other manufacturers from building electric cars, it focused on encouraging them into the electric vehicle space.
Part of Tesla's motivation was the idea that if there are more electric cars, there will be an increase in battery recharging stations. That development would increase the visibility of electric cars, making them more accepted and conventional. Tesla believes the open intellectual property strategy strengthens the company's position by increasing the market devoted to electric vehicles. It expects that its share of the total automotive market will grow as a result.
How to Respond to a Patent Complaint
If your business receives a patent complaint, several response strategies may be available:
- Evaluate the claim – Determine whether your product actually infringes the patent in question. A legal review is essential.
- File an Answer – Defendants must respond formally in court, either denying infringement or raising defenses.
- Assert defenses – Common defenses include arguing non-infringement, patent invalidity (e.g., prior art shows the invention wasn’t new), or improper ownership.
- Seek settlement or licensing – Many disputes are resolved through negotiated licensing agreements rather than prolonged litigation.
- Challenge the patent – Filing an inter partes review (IPR) or reexamination with the USPTO can contest the validity of the patent.
Responding strategically can prevent costly damages and protect a company’s reputation.
How Open Patents Benefit Society
When intellectual property is carefully managed by companies in this way, it can lead to support of the transition to sustainability in other industries as well.
Energy supply is facing some of the following problems:
- Air pollution
- Natural resource depletion
- Greenhouse gas emissions
- Security of the supply
- Nuclear risks
The water supply sector faces restrictions due to the following:
- Pollutants
- Water scarcity
- Extreme environmental events (including the cost of supplying water to poor and remote communities)
The agri-food sector is facing pressure to increase production of food in sustainable ways and address the problem of malnutrition in poor locales.
In order to find a way to address these problems, it's essential to have new knowledge and the innovations that inevitably follow. Intellectual property either inhibits or helps.
When the ownership of intellectual property is fragmented, it can cause a decrease in technology innovation. This is the case in the electronics industry when multiple entities hold complementary patents. Instead of doing this, companies can open up their innovation processes and stop jealously guarding their technology, which only prolongs the lifecycle of existing technology.
By making such a change, companies may engage in the type of knowledge sharing that fosters accelerated cycles of innovation as well as a faster uptake of sustainable alternatives throughout an industry, which is what Tesla was trying to do with the electric car market.
Taking part in the “open-IP” system is familiar to the healthcare (with the Medicine Patent Pool) and software industries. This open approach has made lifesaving medicines accessible to many people, especially in developing areas of the world.
The open patent approach is designed to advance technology for everyone in an effort to benefit society as a whole. When companies participate in open patent licensing, they open the doors for increased sustainability and innovation, which can help people around the world.
Litigation Risks and Remedies in Patent Complaints
Patent complaints can result in significant financial and operational risks for businesses. Courts may impose:
- Injunctions – Orders to stop manufacturing, using, or selling the infringing product.
- Monetary damages – Compensation for lost profits or royalties, which may be tripled in cases of willful infringement.
- Legal costs – Fees and expenses associated with defending or prosecuting the case.
Because litigation can be unpredictable, many companies choose to resolve disputes through alternative dispute resolution (ADR) methods such as mediation or arbitration. These approaches can reduce cost and preserve business relationships.
In industries like healthcare, technology, and manufacturing, where innovation is rapid, balancing patent enforcement with knowledge sharing remains a challenge. Companies must weigh the benefits of protecting intellectual property through complaints against the potential slowdown of industry-wide innovation.
Frequently Asked Questions
-
What is a patent complaint?
A patent complaint is a legal claim filed by a patent holder alleging that another party is infringing their intellectual property rights. -
How long do I have to respond to a patent complaint?
In federal court, defendants usually have 21 days from service of the complaint to file a response, though extensions may sometimes be granted. -
What defenses are available against patent complaints?
Defenses include non-infringement, invalidity (e.g., prior art exists), prior use, or that the patent was obtained improperly. -
Can patent complaints be resolved without going to court?
Yes. Many disputes are settled through licensing agreements, mediation, or arbitration, avoiding lengthy and expensive litigation. -
What happens if I ignore a patent complaint?
Failing to respond can result in a default judgment, where the court rules in favor of the patent holder and may impose damages or injunctions.
If you need help understanding patent complaints, you can post your legal need on UpCounsel's marketplace. UpCounsel accepts only the top 5 percent of lawyers to its site. Lawyers on UpCounsel come from law schools such as Harvard Law and Yale Law and average 14 years of legal experience, including work with or on behalf of companies like Google, Menlo Ventures, and Airbnb.