A "pending patent" does not exist. A patent application which is pending at the patent office is typically referred to as "patent pending", but has not yet matured into an enforceable right. A patent application can, in theory, be pending indefinitely as long as you are willing to pay to keep it alive (via Requests for Continued Examination or via continuation applications, and so forth).
Their was a fructose hard candy patent filed for Lifesavers inc in 1980, but there were lifesavers candy manufactured for 80 years before that. The patent would only be valid for 20 years. Prior to 1995, US patents were only valid for 17 years from date of issue.
A patent issued in the USA can be enforced only in the courts of the USA.
Patents are typically valid for 20 years from the date of filing, but their duration can be affected by factors such as maintenance fees, legal challenges, and changes in patent laws.
Patents are typically valid for 20 years from the date of filing. Factors that can affect their duration include maintenance fees, legal challenges, and changes in patent laws.
2 Years
A passport is typically valid for 10 years from the issue date.
A passport is typically valid for 10 years for adults and 5 years for children under 16 years old.
A passport is typically valid for 10 years for adults and 5 years for children under 16 years old.
4 years
4 years
Both of them are valid for 10 years from the issue date.
US Patents for anything are good for 17 years.