An attorney for General Motors directors pushed back against shareholders’ assertions that the board acted in bad faith by failing to implement systems that would have alerted it sooner to safety problems associated with faulty ignition switches, accusing the shareholders of misrepresenting the board’s actions.

In oral arguments before the Delaware Supreme Court on Wednesday, Robert J. Kopecky of Kirkland & Ellis emphasized a cache of corporate documents that he said refuted the shareholders’ argument that the directors “utterly failed” in their duties of oversight.