In Katchen v. Landy, the U.S. Supreme Court ruled that a bankruptcy court has jurisdiction to adjudicate counterclaims arising from the trustee's efforts to recover preferential transfers. The case involved a bankrupt company that had made payments to its creditor within four months of filing for bankruptcy, which were deemed as "preferences" under Section 60(a) of the Bankruptcy Act because they gave undue advantage over other creditors in violation of equitable principles governing insolvency proceedings. The Trustee sought recovery of these preferences and filed counterclaims against the creditor who contested them on procedural grounds arguing that only plenary suits could be used for such purpose not summary proceedings before a referee in bankruptcy. The Supreme Court disagreed with this argument holding that Congress intended broad grant of jurisdiction to bankruptcy courts so they can efficiently resolve all matters connected with bankruptcy estate without resorting to separate lawsuits thus promoting speed, economy and convenience in administration process while ensuring fair treatment for all creditors by preventing any one from receiving more than their due share at expense others'. This decision clarified scope and limits judicial power conferred upon federal referees acting under authority granted by Bankruptcy Act thereby enhancing effectiveness overall system designed protect interests both debtors their creditors alike during liquidation process.

In the dissenting opinion for Katchen v. Landy, Justice Harlan argued that the majority's decision expanded bankruptcy court jurisdiction beyond its traditional limits. He contended that a creditor should not be forced to litigate in bankruptcy court over an issue unrelated to his claim against the bankrupt estate, such as preference and fraudulent conveyance actions. The justice believed this expansion of power was inconsistent with historical practice and could potentially infrive upon creditors' Seventh Amendment right to a jury trial in civil cases. Furthermore, he expressed concern about potential bias from bankruptcy judges who might favor debtors over creditors due to their role in overseeing debtor rehabilitation efforts.