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One-year rule

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U.S. patent law Edit

The one-year rule is a statutory rule of the U.S. Patent and Trademark Office which states that a valid patent can still be obtained on an application filed before or up to one year after initial public use or sale in the United States, or patenting or publication anywhere in the world, provided the invention has been reduced to practice before the public use, sale, patenting or publication by another.

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