(September 16, 2015, 4:02 PM EDT) -- WASHINGTON, D.C. — A trial court erred in granting summary judgment of noninfringement when ordinary observers considered the patented and accused designs for a tool handle to be substantially the same, a patent inventor argues in a petition for certiorari filed Aug. 31 in the U.S. Supreme Court (Kenneth Butler, Sr. v. Balkamp, Inc., et al., No. 15-273, U.S. Sup.)....