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The US6967208 was filed in 17 Sep 2002, published in 22 Nov 2005. With 20 years from date of filing as an expiry date for a patent it would expire on 16 Sep 2022. However needed to know if there was an extension provided to this patent.

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One way to check this is on the face of the patent. Just above the application number. It says 139 days.enter image description here

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  • Thats way too easy. ;-)
    – Eric S
    Sep 12 '20 at 18:04
  • It is important to the rights granted by the patent so it needs to be clear on the face of the document.
    – George White
    Sep 13 '20 at 0:01
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You can check this by yourself on the US Public Pair site. Select "Patent Number" and enter 6967208. When the specific record is visible, click on the "Patent Term Adjustments" tab. When I do this I see "Total PTA Adjustments:" listed as 139 days.

enter image description here

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