Answer :
The correct answer is the clause 8 within Article I, Section 8 of the US constitution authorizes congress to pass laws protecting intellectual property.
The clause actually bestows two separate powers: the ability to secure for a finite period of time the exclusive right to authors' writings, which serves as the foundation for U.S. copyright law, and the ability to secure for a finite period of time the exclusive right to inventors' discoveries, which serves as the foundation for U.S. patent law.
Trademarks are instead protected under the Commerce Clause because the clause is silent on whether Congress may protect them. Some of the terminology in the clause have dated connotations, which could be misleading to readers today.
For instance, "useful Arts" refers to all knowledge, not only the disciplines of current scientific investigation, and "Sciences" refers to all knowledge, not just the domains of modern scientific study.
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