Tag Archives | means-plus-function

Mercedes Successful Invalidating Driver Sleepiness Detection Patent

USPat6313749_Fig1The case of Ibormeith IP LLC v. Mercedes-Benz USA, LLC, Dkt. No. 2013-1007 (Fed. Cir. Oct. 22, 2013) is another case where means-plus-function claims were found invalid for lack of an adequate algorithm/structure disclosed in the description of the patent.

Ibormeith sued Mercedes alleging that Mercedes vehicles having an Attention Assist feature infringed U.S. Patent No. 6,313,749. The ‘749 patent is titled, “Sleepiness Detection for Vehicle Driver or Machine Operator.” The ‘749 patent is directed to monitoring conditions affecting or behavior reflecting a vehicle driver’s sleepiness. Then issuing a warning to the driver before driving is unduly impaired.

Sleepiness Warning
The patent discloses monitoring that takes into account sleepiness factors including, as summarized by the court, “natural body-clock (circadian rhythm), the magnitude and number of corrective steering action the …

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Sufficient Computer Structure Disclosure for Means-Plus-Function Elements

HTC Corp v. IPCom GMBH, Dkt. No. 2011-1004 (Fed. Cir. Jan 30, 2012) [PDF].

HTC sue IPcom for declaratory judgement of non-infringement of IPCom’s Patents, including U.S. Pat. No. 6,879,830 and IPCom countersued for infringement. The ‘830 patent is directed to the handover of a cellular phone from one base (tower) to another, as for example, when a person uses a cell phone in a car traveling between coverage areas.  The invention is intended to reduce the chance of service interruption during the handover.

Claim 1 provides:

A mobile station for use with a network including a first base station and a second base station that achieves a handover from the first base station to the second base station by:

storing link data for a link in a

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