As a general rule does Rule 12(g) allow you to file a second Rule 12 Motion to raise a defense that was available to you, but you omitted?

• A. Yes
• B. No
• C. Only if new facts
• D. Only if both sides agree

Answer: (B)

Rule 12(g) teaches you to bring all defenses you have in one motion. If a defense that was available to you is left out of that initial 12(b) motion, you generally cannot litigate it later by filing another Rule 12 motion. The idea is to avoid piecemeal dismissals and gamesmanship by waiting to see how things develop. If a defense truly isn’t raised in the first motion, the usual path is to raise it in an answer or through another proper procedure later, not by a second Rule 12 motion. There are narrow exceptions under Rule 12(h) for certain defenses (such as lack of subject-matter jurisdiction) that may be raised later, but those do not override the general rule against a second 12(b) motion for omitted defenses.