GL F III 10 Sufficiency of disclosure and Rule 56

Under Rule 56, missing parts may be withdrawn in order to maintain the original filing date, and these parts are then deemed to be no longer part of the application (see also A‑II, 5.4.2 and 5.5, C‑III, 1, and H‑IV, 2.2.2).
In this case, the division must carefully evaluate whether the invention is still sufficiently disclosed without relying on the technical information contained in the withdrawn missing parts. If the division reaches the conclusion that the requirements of Art. 83 are not satisfied, a corresponding objection is raised. Ultimately, the application may be refused for lack of sufficient disclosure (see F‑III, 3 to 5).

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EPC Articles

EPC Implementing Rules

EPO Guidelines - A Formalities Examination

EPO Guidelines - C Procedureal Aspects of Substantive Examination

EPO Guidelines - F The European Patent Application

EPO Guidelines - H Amendments and Corrections