402 U.S. 313 (1971) Cited 2,222 times 13 Legal Analyses
Holding issue preclusion inappropriate when "without fault of his own the [party to be precluded] was deprived of crucial evidence or witnesses in the first litigation"
349 U.S. 322 (1955) Cited 883 times 2 Legal Analyses
Holding that two suits were not "based on the same cause of action," because "[t]he conduct presently complained of was all subsequent to" the prior judgment and it "cannot be given the effect of extinguishing claims which did not even then exist and which could not possibly have been sued upon in the previous case"
Holding that former employee's lawsuit was not barred by res judicata by union's prior suit where employee was not a party to the prior suit, as a former union member was not in privity with the union, and never authorized the union to represent his interest in prior suit
Holding that an independent claim including the limitation "magnetic member" includes ferromagnetic material in addition to a magnet, in light of dependent claim limiting "magnetic member" to a magnet
Holding that prosecution history estoppel applies if the scope of the subject matter claimed in a rewritten independent claim has been narrowed to secure the patent
Holding that the Lear v. Adkins ruling, which overrides certain contractual promises, does not override the claim-preclusive effect of a consent decree
Holding Elekta's earlier judgment of noninfringement on other theories enough to confer upon it the status of a non-infringer and give its products "the status of noninfringing products"