WWE has filed a trademark for the “Kliq†hand gesture, which has been used by Kevin Nash, Scott Hall, Triple H, Shawn Michaels and X-Pac over the years.
It’s also used by The Bullet Club, which could present some problems in the future. The Young Bucks are currently selling t-shirts here which include the gesture.
PWInsider
For what it's worth, Waltman has said on Twitter he has no issue with others using the gesture.
WWE clamping down HARD though.