Lawyer I Trust Guide · General U.S. information · Reviewed September 16, 2026
A patent is a form of intellectual property protection that grants an inventor the exclusive right to prevent others from making, using, selling, or importing their invention for a limited period. The foundation of the U.S. patent system is found in Article I, Section 8, Clause 8 of the U.S. Constitution, which empowers Congress to promote the progress of science and useful arts by securing for limited times to inventors the exclusive right to their respective discoveries. This constitutional mandate is implemented through the Patent Act, codified under Title 35 of the United States Code.
The Purpose and Scope of Patents
The primary objective of the patent system is to encourage innovation. By granting inventors a temporary monopoly on their creations, the government provides an incentive for individuals and companies to invest time and resources into research and development. In exchange for this exclusive right, the inventor must publicly disclose the details of their invention. This disclosure allows the public to learn from the innovation, and once the patent term expires, the invention enters the public domain, where it can be freely used by anyone.
Patents are administered by the United States Patent and Trademark Office (USPTO). The scope of what can be patented is broad but not unlimited. According to 35 U.S.C. § 101, a patent may be obtained for any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof. However, the courts have clarified that laws of nature, physical phenomena, and abstract ideas are not eligible for patent protection.
Requirements for Patentability
Not every invention qualifies for a patent. To be granted a patent, an invention must satisfy several rigorous criteria. First, it must fall within the category of patentable subject matter. Second, the invention must be useful, meaning it must have a practical application. Third, it must be novel, meaning it has not been previously disclosed or made available to the public. Fourth, the invention must be nonobvious, which requires that the invention would not have been apparent to a person having ordinary skill in the relevant field at the time the invention was made. Finally, the application must satisfy the enablement requirement, which means the patent application must describe the invention in sufficient detail to allow someone skilled in the field to make and use it.
Types of Patents and Rights
There are different types of patents designed to protect various aspects of innovation. Utility patents are the most common, covering processes, machines, and compositions of matter. Design patents, on the other hand, protect new, original, and ornamental designs for an article of manufacture. Regardless of the type, a patent provides the holder with the legal authority to exclude others from commercializing the invention. This right is territorial, meaning it applies throughout the United States and its territories. If a third party infringes upon these rights, the patent holder may have legal recourse to seek remedies, such as damages or injunctions, through the federal court system.
Sources and further reading
Educational information only. This guide is not legal advice. Laws and procedures vary by jurisdiction.