What is the timeframe for entry into the national stage from a PCT application?

The timeframe for entry into the national stage from a Patent Cooperation Treaty (PCT) application is established as 30 months from the priority date. This period allows applicants to have adequate time to decide in which contracting states they wish to pursue their application, while also permitting additional time for potential further developments or refining of the patent claims.

During this 30-month window, applicants must engage with the international phase of the process, including possibly responding to international search reports or preliminary examinations. It is essential to note that the 30-month deadline is consistently recognized across PCT member countries, making it a critical point for applicants to consider when planning their international patent strategies.

While the other options mention different timeframes, they do not align with the established 30-month period as defined by the PCT rules. Understanding this specific timeframe is crucial for maintaining the status of the application and ensuring that the applicant's rights are preserved during the transition from the international phase to the national phase.