466 U.S. 668 (1984) Cited 158,554 times 176 Legal Analyses
Holding an "error by counsel" doesn't "warrant setting aside the judgment of a criminal proceeding" where in the context of the whole proceeding the identified error "had no effect on the judgment"
386 U.S. 738 (1967) Cited 77,699 times 14 Legal Analyses
Holding that when counsel determines that a criminal defendant's case is "wholly frivolous," counsel must "so advise the court and request permission to withdraw"
450 U.S. 261 (1981) Cited 1,221 times 10 Legal Analyses
Holding the trial court violated its duty to inquire into the conflict created by the fact that the defendant's lawyer was hired and paid by a third party
Holding that because, "[g]enerally, the ineffectiveness of counsel is not demonstrable on the main record,... it would be better, and in some cases essential, that an appellate attack on the effectiveness of counsel be bottomed on an evidentiary exploration by collateral or post-conviction proceedings brought under CPL 440.10"
Holding that defendant cannot file a pro se extraordinary writ with the Florida Supreme Court while simultaneously being represented by counsel in an ongoing lower court proceeding
In Berroa, defense counsel's out-of-court conversations with defense witnesses created the potential that she would become a witness against her client when those witnesses later gave alibi testimony contradicting what they had previously told her.