Webber Wave Pools and the KSWC both claim designs consisting of a donut-shaped pool encircling an island with waves breaking around the island. The patentable aspect lies in the source of the waves: A hull, or "foil" that displaces water, sends a wake toward the island forming a sustained wave. Webber's creates two waves per hull while Slater's forms one.

In its reapplications, the KSWC focused on this distinction, further stating that the designs create different types of waves, which appears to have eventually persuaded patent examiners to grant KSWC its own patent. Slater wrote that his company's patent had been accepted in an op-ed featured on The Inertia Wednesday.

At time of publication, ESPN was unable to verify Slater's patent claim due to the USPTO's observance of Thanksgiving, a U.S. federal holiday.

Slater distinguishes his wave as a "soliton" --or solitary wave -- similar to groundswell, opposed to Webber's Kelvin subcritical waves, which are more reminiscent of wind swell or a boat wake.

Webber, who first became inspired to learn how to make waves by the perfectly-breaking wake of a fishing boat, confirmed Slater's distinction.

Webber's team made a soliton wave while testing designs at Delft University of Technology in the Netherlands in 2006, Webber said. The company did not attempt to patent that particular design because of financial constraints. Also, soliton waves more closely resemble tidal bores, which lack a trough, making them inferior to Kelvin subcritical waves, according to Webber.

"It's not like he's won a battle or I've won a battle. He's highlighted a point that they're really going after a slightly-different type of wave," Webber said in response to the patent developments. "I can't see it being negative. It's a blessing in a way that we now have two different approaches."

Webber said that in two years his company, like Slater's, could create a functional wave pool, if a client provided the necessary financial commitment.

"It is a bit of a race, but the techniques are totally different," he said. Despite the blossoming competition, Webber believes he and Slater hold common goals and may cooperate in the future.

"Kelly and I will work together in the future, I'm almost sure of it," he said. "We are tied by that same motivation to do something amazing."

Considering Slater's taste for competition, it's unlikely that he'll submit to a cooperative venture anytime soon. So in the meantime, the surfing world has a brand new rivalry to watch unfold.