463 U.S. 1 (1983) Cited 10,421 times 5 Legal Analyses
Holding that a case may not be removed to federal court on the basis of a preemption defense even where "both parties admit that the defense is the only question truly at issue in the case"
515 U.S. 277 (1995) Cited 4,288 times 7 Legal Analyses
Holding that in declaratory judgment actions, district courts have “greater” discretion to abstain than under Colorado River's “exceptional circumstances” test
414 U.S. 538 (1974) Cited 2,111 times 162 Legal Analyses
Holding the commencement of a class action "suspends the applicable statute of limitations as to all asserted members of the class who would have been parties had the suit been permitted to continue as a class action"
Holding that an insurance dispute arising out of damage caused by the September 11 terrorist attacks was ripe and noting that "[b]ecause the issue presented . . . concerned the scope of coverage, the standard for ripeness . . . was plainly satisfied"
Holding that the district court properly allowed later-filed suit to proceed because first-filed declaratory judgment suit was triggered by notice letter and was therefore "in apparent anticipation of [the later-filed suit]"
28 U.S.C. § 1331 Cited 97,061 times 133 Legal Analyses
Finding that in order to invoke federal question jurisdiction, a plaintiff's claims must arise "under the Constitution, laws, or treaties of the United States."
Establishing a one-year statute of limitations for §§ 11 and 12 claims which begins to run upon "the discovery of the untrue statement or omission, or after such discovery should have been made by the exercise of reasonable diligence"