See MPEP Section 718 . This paragraph may be used without paragraph 7.57 when an affidavit has not yet been filed, and the examiner desires to notify applicant that the submission of an affidavit under 37 CFR 1.131 would be inappropriate. This paragraph must be preceded by paragraph 7.57. An explanation of the lack of showing of the alleged reduction to practice must be provided in bracket 2. While conception is the mental part of the inventive act, it must be capable of proof, such as by demonstrative evidence or by a complete disclosure to another.
Conception is more than a vague idea of how to solve a problem.
The requisite means themselves and their interaction must also be comprehended. This paragraph must be preceded by paragraph 7.57. An explanation of the deficiency in the showing of conception must be presented in bracket 2. 3. If either diligence or a reduction to practice is established, a statement to that effect should follow this paragraph. This paragraph must be preceded by paragraph 7.57.