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What is the significance of patent numbers?

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Patent numbers provide the details of a patented utility, design or plant. This number is an eight-character identifier, states the United States Patent and Trademark Office. Each patent number is unique and can be traced back to the owner of the patent.

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What is the significance of patent numbers?
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Usually, utility patents consist of six to seven digits. If a patent is reissued, it starts with "Re" followed by a six-digit number. Plant patents usually begin with "PP" followed by a six-digit number, and design patents begin with a "D" followed by a seven-digit number. Similarly, there are different alphabets to signify the category of the patent followed by an assigned number of digits, says the USPTO.

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