What is a patent?

• A. A tax exemption for inventions
• B. A license to import foreign goods
• C. A government grant to exclude others from making, using, or selling an invention for a limited period
• D. A copyright on software

Answer: (C)

A patent is a government-granted monopoly that gives the inventor the exclusive right to prevent others from making, using, selling, or importing the patented invention for a limited period. This protection typically lasts about 20 years from filing in many places, as long as maintenance fees are paid. It’s not a tax exemption, not a license to import foreign goods, and not a copyright on software. A patent covers a new, useful, and non-obvious invention—like a novel catalytic process, a unique reactor design, or a new material—allowing the inventor to commercialize and protect their idea while enabling public disclosure of the invention after grant. Rights are enforceable by the patent holder within the jurisdiction that grants the patent.