How should a preliminary amendment be formatted?
A preliminary amendment must comply with the formatting requirements set forth in 37 CFR 1.121. The MPEP states, Any preliminary amendment, regardless of when it is filed, must comply with 37 CFR 1.121, e.g., the preliminary amendment must include a complete listing of all of the claims and each section of the amendment must begin on a separate sheet of paper.
Additionally, for amendments to the specification (other than the claims), the only acceptable format is a substitute specification in compliance with 37 CFR 1.121(b)(3) and 1.125. Failure to comply with these formatting requirements may result in a notice of non-compliant amendment.
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