Patent 7634749 was granted and assigned to Cadence Design Systems on December, 2009 by the United States Patent and Trademark Office.
A method of designing a skew insensitive circuit is performed by designing a synchronous circuit including flip-flops and combinatorial logic and, for each flip-flop, inserting logic gates to receive a skewed clock signal and to locally derive non-overlapping clock phases from the skewed clock signal.