Final Answer:
The type of law that will protect your idea after receiving the patent for it is, option 3) Patent and trademark law.
Step-by-step explanation:
Once you receive a patent for your idea, the legal framework that safeguards your intellectual property falls under patent law. Patent law provides exclusive rights to the inventor, preventing others from making, using, selling, or importing the patented invention without permission. This protection encourages innovation by ensuring inventors can benefit from their creations. While trademark law also protects intellectual property, it primarily pertains to symbols, names, or distinctive signs identifying goods or services, not the underlying inventions. Options 1) Competitive advantage, and 4) Product law are more general concepts and don't specifically address the legal protection granted by patents.
Option 3 is the answer.