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サマリー
あらすじ・解説
U.S. patents are essentially nonrenewable. Think of them like a countdown timer. Once that timer runs out, anyone can use the invention.
Here's how long they last:
- Utility patents: These protect how inventions work (like a new engine). They last 20 years from the date you apply for the patent.
- Design patents: These protect how something looks (like the shape of a new car). They last 15 years from the date the patent is granted.
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