In this post, we take a look at whether or not Apple’s iPhone XR infringes LBT IP I LLC patents.

Is iPhone XR infringing LBT’s patents?

Not that long ago, telephones served one purpose: voice communications. After the invention of the first smartphone by IBM in 1992, the meaning and purpose of the telephone changed. Twenty seven years later, smartphones are now as powerful as personal computers. Apple introduced the first model of the iPhone in 2007. It had a 3.5-inch touch screen and battery life of just 5 hours for 3G talk time. Since then, improving battery life has been at the forefront of improvements in the iPhone series. On October 26, 2018, Apple released the iPhone XR, which claims to have the highest battery life of all iPhones, featuring more than 24 hours of talk time.

LBT IP I LLC (LBT), a non-practicing entity located in the state of Delaware, is the assignee of U.S. Patent Nos. 8,497,774, 8,542,113, 8,102,256, 8,421,619 and 8,421,618. All of these patents have to do with power management technology in a portable electronic tracking device. The above-mentioned patents claim to use techniques for monitoring various signals and inputs received by the portable electronic device to control battery consumption.

On June 24, 2019, LBT sent a notice letter to Apple, stating that Apple’s products, including all iPhone series phones, iPad series tablets, and especially the new iPhone XR model, had infringed the methods described in LBT’s patents-in-suit.

On July 1, 2019, LBT lodged a patent infringement suit (1:19-cv-01245) against Apple in the United States District Court for the District of Delaware for infringing the below mentioned claims of patents-in-suit:

Patent number

Asserted claims


1, 4, 5, 8, 13, and 15


1-4, 7-14, and 17-18




1, 9-16, and 19-24


1, 3, 5-7, 11, 12, and 14-17

LBT stated in their complaint that the low power mode functionality in the accused devices reduces or stops certain background activity related to transceiver and processor circuitry of GPS functionality, in order to conserve battery life. They asserted that this process method infringed the claims of the ‘774 patent directly, or under the doctrine of equivalents. LBT requested the Court to enter judgment in favor of LBT and award a reasonable damage amount. They also asked for a permanent injunction order against Apple’s infringed products.

Will Apple prove that their iPhone XR doesn’t infringe the patents-in-suit or go for a settlement with LBT? We will have to stay tuned to find out.

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