Joinder

Question 1

Joinder multiple defendants or plaintiffs

Answer 1

Rule 20(a)(1) allows multiple plaintiffs to join together if their claims have a common nucleus of operative facts and at least one question of law in common.

Rule 20(a)(2) allows multiple defendants to join together if the claims against them has a common nucleus of operative fact and at least one question of law in common.

Question 2

Claim joinder by single plaintiff

Answer 2

Rule 18 allows a plaintiff to join any and all claims against a defendant in a single case.

Question 3

Defendant compulsory counterclaim

Answer 3

If a defendant has a claim against the plaintiff that comes from the same nucleus of operative facts as the plaintiff’s claim, Rule 13(a) says they must bring it; even if that claim wouldn’t normally fit federal jurisdiction, supplemental jurisdiction holds

Question 4

Permisive defendant Counter claim

Answer 4

if a defendant has a claim against the plaintiff that comes from a different nucleus of operative facts, Rule 13(b) lets them bring it but the court only hears it if subject matter jurisdiction exists on its own.

Question 5

Defendant crossclaim

Answer 5

13g allows crossclaims from the same nucleus of operative facts, but its never compulsory.