Apple may have hoped its haptic vibration patent battle was behind it, but the case is far from over. Last September, a jury found that the technology known as the Taptic Engine infringed two patents belonging to Taction Technology and ordered the tech giant to pay $5.7 billion in damages.

The patent holder, however, says that figure is not enough. In a filing with the federal court, Taction is demanding additional damages, accrued interest, and a licensing fee on future iPhone and Apple Watch models.

Extra claim for a sales period left out of the original calculation

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According to documents submitted to the court, the September verdict only covered sales from 2021 through the end of March 2026. Taction wants Apple to pay for the roughly six-month additional sales period that was not included in the jury's calculation.

Beyond that, the company is invoking California law to demand 7% annual interest on top of the damages. That rate could push Apple's total bill up by hundreds of millions of dollars. Taction also wants interest to keep accruing from the announcement of the final judgment until payment is completed in full.

A licensing proposal running to 2035

Taction's forward-looking demands are equally notable. Under the proposed arrangement, Apple would pay licensing fees on devices containing the infringing technology until the patents expire on September 24, 2035. The company would report its US sales every quarter and make royalty payments within 30 days of the close of each period.

Apple keeps fighting the verdict

Apple's position has not changed. The company argues that the Taptic Engine works on an entirely different principle from Taction's patents. Claiming that the $5.7 billion figure is not supported by the evidence presented, Apple is seeking to have the verdict overturned or a new trial ordered, and has already announced that it will appeal the decision.