1/ The Bow wings respecting  Diamond White’s Intellectual Property rights have a concave trailing edge, and bear a Certificate of Authenticity on one of their tips.
2/ The wings having a concave trailing edge when they are flying, seen from above, but which don’t bear a Certificate of Authenticity are probably infringing wings. The manufacturers, distributors, sellers and owners of such wings are likely to be prosecuted.
3/ The true hybrid wings have a straight or convex trailing edge when the kite is flying, viewed from above. They don’t fall under the “concave trailing edge”  patent but possibly under  other Diamond White’s patents.

More informations at www.bowkite.com