It protects the inventor from the illegal use of his invention?

• A. Patent
• B. Permit
• C. License
• D. Insurance

Answer: (A)

A patent grants the inventor exclusive rights to prevent others from making, using, or selling the invention without permission. This legal protection lets the inventor take action against anyone who copies or uses the invention without authorization, effectively guarding against unauthorized use and infringement for a defined period. The other options don’t provide this broad protective power: a permit authorizes a specific activity but doesn’t give the inventor exclusive rights over an invention; a license is a contractual permission to use the invention under certain terms but doesn’t automatically shield the inventor from infringement by others; insurance covers risk, not enforcement of rights.