https://www.epo.org/en/service-support/faq/applying-patent/fees-and-costs/how-accurate-fee-assistant-and-are-results
How accurate is the Fee Assistant and are the results legally binding?
The Fee Assistant provides indicative results based on the information entered by the user. It does not verify eligibility, and the results are not legally binding. Actual eligibility will be checked during the European patent application procedure, and refunds or additional payments may apply depending on the circumstances.
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