How is the application size fee calculated for a PCT national stage application in the US?

The application size fee for a PCT national stage application in the US is calculated based on the international application as published by WIPO under PCT Article 21. MPEP 1893.01(c) provides specific details on this calculation: “The application size fee is calculated on the basis of the number of sheets of specification (including the description,…

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What is the PCT and how many member states are there?

The PCT (Patent Cooperation Treaty) is an international patent law treaty that provides a unified procedure for filing patent applications to protect inventions in its contracting states. The exact number of member states changes over time as new countries join. According to the MPEP, An updated list of PCT Contracting States is available from WIPO’s…

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What is the purpose of Form PCT/ISA/237?

Form PCT/ISA/237 is used for preparing the Written Opinion of the International Searching Authority. The Written Opinion provides an initial, non-binding opinion on the patentability of the claimed invention. As stated in the MPEP, Box No. V is the main purpose of the written opinion. All claims without fatal defects are treated on the merits…

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What is Form PCT/ISA/203 and when is it used?

Form PCT/ISA/203 is a declaration used by the International Searching Authority (ISA) when it determines that no search report will be established for any of the claims in an international patent application. According to the MPEP: “If the examiner determines that none of the claims will be searched, the examiner declares that no search report…

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