What was Glenn Curtiss's argument against the Wrights' patent?

Glenn Curtiss's argument against the Wright brothers' patent centered on the contention that the specific placement and use of ailerons, which were critical for controlled flight, had not been sufficiently demonstrated by the Wrights before they filed their patent. Curtiss believed that variations in wing control mechanisms, such as ailerons, were part of the common knowledge in aeronautics and not original to the Wrights. By focusing on the specifics of aileron placement and demonstrating his own designs that used similar concepts, Curtiss aimed to show that the Wright brothers did not have exclusive rights to this essential aspect of flight control. This argument played a significant role in the battles over the Wright brothers' patent and highlighted the ongoing discussions about innovation and originality in early aviation technology.