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Understanding these date-related factors is crucial to determining whether prior art can be used to challenge the validity of a patent . Here is a breakdown of the date criteria involved in an invalidity search: 3.1. Priority Date Definition: The priority date is the earliest date an invention is considered to have been disclosed or filed. It is the starting point for french polynesia b2b leads determining novelty and obviousness. Any prior art published or disclosed after this date cannot be used to invalidate the patent. How It Works: The priority date is usually the filing date of the patent application, but it can also be earlier if the applicant claims priority from an earlier filing in another jurisdiction (e.


g., through the Paris Convention or a PCT application). This means that prior art that was published or publicly disclosed before this priority date must be taken into account when assessing the novelty and non-obviousness of the claimed invention. : To conduct an accurate invalidity search, it is essential to identify the priority date of the patent in question. This ensures that only art published or disclosed before that date is considered, and that information released after that date is not excluded from the analysis. 3.2. Filing Date Definition: The filing date of a patent is the official date on which the patent application is submitted to the relevant patent office.