1. American invention patent: 20 years from the date of filing, and the maintenance fee shall be paid in the third, seventh and eleventh years from the date of registration. The scope of protection relates to the patent of the composition or the method of using the composition, and its validity can be extended to 5 years at the longest.
2. American design patents: fourteen years from the date of registration. You can still file a patent application within half a year after publication (this is a big difference between American patent novelty judgment and China patent).
3. Patents of new plant varieties: 20 years from the date of application, and maintenance fees shall be paid in the third, seventh and eleventh years from the date of registration.
Extended data:
Information needed to apply for a patent in the United States:
First, the United States invention and design patent application:
1, specification, patent application part and drawings,
2. affidavit and power of attorney,
3. Personal declaration (the applicant is an individual, or a small enterprise with less than 500 employees, or a non-profit organization).
Second, the provisional application:
1, description, drawings and names, addresses and nationalities of all inventors,
2. Personal statement.
Third, claim priority:
If the same invention (or design) has been applied in other Paris Convention countries, and the original application date is claimed in the United States, an application shall be filed with the United States Patent Office within one year (including Taiwan Province Province) from the application date of the first foreign application (the design is half a year).
4. Novelty requirements (principle of first invention and principle of one-year preferential period)
An invention loses its novelty if it is patented in the United States or other countries or published in publications, or publicly used or sold in the United States for more than one year; On the other hand, if it is less than one year, it still has the novelty of applying for a patent.
Baidu Encyclopedia-American Patent System