If a plaintiff files a diversity action with a business tort claim and later asks to add an intentional tort claim arising from the same incident as a supplemental pleading, should the court allow it under FRCP 15(d)?

If a plaintiff files a diversity action with a business tort claim and later asks to add an intentional tort claim arising from the same incident as a supplemental pleading, should the court allow it under FRCP 15(d)?

• A. No, because it would constitute a new suit
• B. Yes, because FRCP 15(d) allows supplementation for related matters
• C. No, because relation back doctrine prohibits
• D. Yes, but only with the defendant's consent

Answer: (B)

Rule 15(d) allows a party to supplement a pleading to set out transactions, occurrences, or events that happened after the date of the pleading and that relate to the same case. When the plaintiff wants to add an additional claim arising from the same incident as the original claim, it’s a related matter within the same action, so the court may permit it as a supplemental pleading. This avoids starting a new suit for closely connected issues and keeps related disputes in one forum. Consent of the defendant isn’t required for a court to allow the supplementation; the court has discretion to permit it if the new claim is related and does not unduly prejudice the defendant. The relation-back concept is more about amendments under 15(c) after a statute of limitations issue, not about supplementation under 15(d). So the best path under Rule 15(d) is to allow the supplemental pleading because the new claim arises from the same incident and is related to the ongoing action.

Rule 15(d) allows a party to supplement a pleading to set out transactions, occurrences, or events that happened after the date of the pleading and that relate to the same case. When the plaintiff wants to add an additional claim arising from the same incident as the original claim, it’s a related matter within the same action, so the court may permit it as a supplemental pleading. This avoids starting a new suit for closely connected issues and keeps related disputes in one forum.

Consent of the defendant isn’t required for a court to allow the supplementation; the court has discretion to permit it if the new claim is related and does not unduly prejudice the defendant. The relation-back concept is more about amendments under 15(c) after a statute of limitations issue, not about supplementation under 15(d). So the best path under Rule 15(d) is to allow the supplemental pleading because the new claim arises from the same incident and is related to the ongoing action.