World Intellectual Property Organization

Common Application Format

In addition to the standard format requirements of the PCT, applicants may also prepare applications in accordance with the Common Application Format (CAF) developed by the Trilateral Offices – the European Patent Office (EPO), the Japan Patent Office (JPO) and the United States Patent and Trademark Office (USPTO).

The Common Application Format streamlines and simplifies direct filings in the Trilateral Offices since applications prepared in accordance with the CAF will not be subject to any additional formality requirements before being processed by the Trilateral Offices.

The CAF is fully compliant with the PCT and provides an additional filing option for applicants.

Additional information on the CAF may be obtained from the Trilateral Cooperation website

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