Patent Board Invalidates Part of Uniloc Battery Charging Patent

Apple Inc. has convinced a U.S. Patent and Trademark Office administrative law tribunal that prior inventions render some claims in a Uniloc 2017 LLC battery charging patent invalid.

The Patent Trial and Appeal Board voided more than half of the claims in Uniloc’s U.S. Patent No. 6,661,203, which involves “charging, discharging, and recharging rechargable batteries under adverse thermal conditions.” Apple had challenged the patent at the PTAB in an inter partes review, in which the board weighs the validity of patent claims in light of prior art.

The Aug. 19 decision is the latest in a running battle between ...