{"id":9806,"date":"2024-07-13T12:51:21","date_gmt":"2024-07-13T07:21:21","guid":{"rendered":"https:\/\/patentattorneyworldwide.com\/in\/?page_id=9806"},"modified":"2024-07-13T12:51:23","modified_gmt":"2024-07-13T07:21:23","slug":"how-to-calculate-priority-date-of-patent-application","status":"publish","type":"page","link":"https:\/\/patentattorneyworldwide.com\/in\/how-to-calculate-priority-date-of-patent-application\/","title":{"rendered":"How to calculate priority date of patent application"},"content":{"rendered":"\n<h1 class=\"wp-block-heading has-text-align-center has-base-2-background-color has-background\"><strong>How to calculate priority date of patent application<\/strong> <\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Definition of Priority Date in Patent Application<\/h2>\n\n\n\n<p><strong>Priority Date<\/strong>: The priority date of a patent application is the date that establishes the precedence of the invention. It is crucial because it determines the cut-off date for assessing the novelty and inventiveness of the invention. Any prior art disclosed before this date can be cited against the patent application.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Examples of Priority Date Variations<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. <strong>Provisional Patent Application<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Priority Date<\/strong>: The filing date of the provisional application.<\/li>\n\n\n\n<li><strong>Example<\/strong>: If a provisional application is filed on January 1, 2024, the priority date is January 1, 2024. The applicant must file a complete application within 12 months to claim this priority date.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. <strong>Complete Patent Application<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Priority Date<\/strong>: The filing date of the complete application.<\/li>\n\n\n\n<li><strong>Example<\/strong>: If a complete application is filed directly without a provisional application on March 1, 2024, the priority date is March 1, 2024.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">3. <strong>Complete After Provisional<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Priority Date<\/strong>: The filing date of the provisional application.<\/li>\n\n\n\n<li><strong>Example<\/strong>: A provisional application is filed on January 1, 2024. A complete application claiming priority from this provisional is filed on December 1, 2024. The priority date remains January 1, 2024.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">4. <strong>International Patent Application (PCT Application)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Priority Date<\/strong>: The earliest filing date among the applications whose priority is claimed in the PCT application.<\/li>\n\n\n\n<li><strong>Example<\/strong>: A provisional application is filed in the US on January 1, 2024. A PCT application claiming priority from this provisional is filed on January 1, 2025. The priority date is January 1, 2024.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">5. <strong>National Phase Application<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Priority Date<\/strong>: The priority date of the corresponding international (PCT) application.<\/li>\n\n\n\n<li><strong>Example<\/strong>: Following the PCT application filed on January 1, 2025, with priority from a US provisional filed on January 1, 2024, national phase entries in various countries (e.g., India, Europe) will have a priority date of January 1, 2024.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Detailed Example of Priority Dates<\/h2>\n\n\n\n<p>Let&#8217;s consider a timeline for clarity:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Provisional Application Filed:\n<ul class=\"wp-block-list\">\n<li>Date: January 1, 2024<\/li>\n\n\n\n<li>Priority Date: January 1, 2024<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Complete Application Filed After Provisional:\n<ul class=\"wp-block-list\">\n<li>Date: December 1, 2024<\/li>\n\n\n\n<li>Priority Date: January 1, 2024 (same as the provisional)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>International (PCT) Application Filed:\n<ul class=\"wp-block-list\">\n<li>Date: January 1, 2025<\/li>\n\n\n\n<li>Priority Date: January 1, 2024 (claiming priority from the provisional)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>National Phase Entry (e.g., in India):\n<ul class=\"wp-block-list\">\n<li>Date: July 1, 2026 (within 30\/31 months from the PCT filing date)<\/li>\n\n\n\n<li>Priority Date: January 1, 2024 (same as the provisional and PCT application)<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Summary<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Provisional: The priority date is the filing date of the provisional application.<\/li>\n\n\n\n<li>Complete: The priority date is the filing date of the complete application unless it claims priority from a provisional.<\/li>\n\n\n\n<li>Complete After Provisional: The priority date is the filing date of the provisional application.<\/li>\n\n\n\n<li>International (PCT): The priority date is the earliest claimed priority date, often from a provisional application.<\/li>\n\n\n\n<li>National Phase: The priority date remains the same as the claimed priority in the PCT application.<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\"><strong>Table summarizing the priority dates for different types of patent applications:<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th><strong>Type of Application<\/strong><\/th><th><strong>Filing Date<\/strong><\/th><th><strong>Priority Date<\/strong><\/th><th><strong>Example<\/strong><\/th><\/tr><\/thead><tbody><tr><td><strong>Provisional Patent Application<\/strong><\/td><td>Filing date of provisional application<\/td><td>Same as filing date<\/td><td>Provisional application filed on January 1, 2024. Priority date: January 1, 2024.<\/td><\/tr><tr><td><strong>Complete Patent Application<\/strong><\/td><td>Filing date of complete application<\/td><td>Same as filing date<\/td><td>Complete application filed on March 1, 2024. Priority date: March 1, 2024.<\/td><\/tr><tr><td><strong>Complete After Provisional<\/strong><\/td><td>Filing date of complete application<\/td><td>Filing date of provisional application<\/td><td>Provisional filed on January 1, 2024, complete filed on December 1, 2024. Priority date: January 1, 2024.<\/td><\/tr><tr><td><strong>International (PCT) Application<\/strong><\/td><td>Filing date of PCT application<\/td><td>Earliest claimed priority date<\/td><td>PCT filed on January 1, 2025, claiming priority from provisional filed on January 1, 2024. Priority date: January 1, 2024.<\/td><\/tr><tr><td><strong>National Phase Application<\/strong><\/td><td>Entry date into national phase<\/td><td>Priority date of PCT application<\/td><td>National phase entry on July 1, 2026, for PCT filed on January 1, 2025, claiming priority from January 1, 2024. Priority date: January 1, 2024.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>This table provides a clear and concise overview of how priority dates are determined for different types of patent applications, including examples to illustrate each scenario.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How to calculate priority date of patent application Definition of Priority Date in Patent Application Priority Date: The priority date of a patent application is the date that establishes the precedence of the invention. It is crucial because it determines the cut-off date for assessing the novelty and inventiveness of the invention. 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