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Question: Could I use a provisional patent application I recently filed as part of new, related provisional patent filing?
Question Detail: I recently filed a provisional patent for a process and method of testing, certifying and validating a material improvement process. I would like to file another provisional patent application and reference the prior provisional patent testing means as a way of certifying that the new material processing method has been improved.

ANSWER: Yes. However, you need to do more than just “reference” the prior provisional. You will need to include in the new provisional the contents of the prior provisional.