QUESTION
How long from the date of filing are patents in the United States valid for?
Asked on May 14th, 2015 on Patents - Massachusetts
3 ANSWERS
Intellectual Property Attorney serving South Jordan, UT
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Pearson Butler
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Twenty years for utility patents.
Answered on May 15th, 2015 at 10:55 AM
Generally, patents are in force for about 20 years from the date of application.
Answered on May 15th, 2015 at 1:28 AM
Appellate Litigation Attorney serving Boston, MA
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Banner & Witcoff, Ltd.
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US Patents have a twenty year lifetime - measured from the earliest filing date. Under certain circumstances the 20 year term can be extended - but such extensions are case specific.
Answered on May 14th, 2015 at 3:13 PM