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The 'filing date' of a patent application is the date the patent application was filed in one or more patent offices.
In the United States, if a patent application is mailed to the United States Patent and Trademark Office (USPTO) by Express Mail, Post Office to Addressee, then the date the application was deposited in the post office is the filing date.
★ Priority right
In the United States, if a patent application is mailed to the United States Patent and Trademark Office (USPTO) by Express Mail, Post Office to Addressee, then the date the application was deposited in the post office is the filing date.
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★ Priority right
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psst.. try this: add to faves
