Apple will have to resume a patent infringement lawsuit in North America over its iPhone touchscreens. The decision comes after an Appeals Court overturned the previous ruling dismissing the case, and commented on the “sloppy analysis” that led to the decision being made. The North California appeals court called upon one of its own members, District Judge Jon Tiger, for making the bad decisions back in 2016.

Judge Tiger claimed that the two patents owned by Zeroclick were not valid because they hadn’t shown how they would work in a real situation. However, the appeals decision was that the judge had been too quick to accept Apple’s legal arguments even though its lawyers had provided no proof for their claims. “The court relied on Apple’s arguments, contrasting them against Zeroclick’s contentions, but pointed to no record evidence that supports its ultimate conclusion,” the appeals court noted.

Judge Tigar decided that the patents 7,818,691 and 8,549,443, describing mobile touchscreen interfaces, were “indefinite” by referring a piece of patent law known as “means plus function.”

The appeals court decided that Judge Tigar had “failed to undertake the relevant inquiry and make related factual findings to support its conclusion.”

Zeroclick is seeking a royalty on the use of its patent and given how important the slide-to-unlock feature was on early iPhones, it could be in for a big windfall if it eventually wins the case in court.


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