In this task, you will be shown a sentence, and you should determine whether it is overruling or non-overruling. In law, an overruling sentence is a statement that nullifies a previous case decision as a precedent by a constitutionally valid statute or a decision by the same or higher ranking court which establishes a different rule on the point of law involved. Classify your answers into overruling or non-overruling

however, so far as it may appear to indicate that it is necessary for the winning party to an interference to file a cross-appeal in order to be entitled to argue any matter relevant to the issue of priority of invention which has been raised by him before the board, and which has been decided adversely to him, the statement contained in the sentence in question is at variance with the established practice of this court as set forth in the decisions cited above, and is accordingly overruled.
overruling

but here, the district court denied leave to amend based on futility.
non-overruling

in support of its position, the court cited several cases from foreign jurisdictions.
non-overruling