October 5, 2022

In a Thursday opinion, a Northern District of California choose granted Amazon’s movement for abstract judgment of noninfringement in a patent case regarding Amazon’s product search automcompletion expertise.

MasterObjects Inc., filed its grievance in opposition to Amazon.com Inc., alleging the defendant’s autocomplete expertise for digital searches infringed on three of the plaintiff’s patents. In accordance with the opinion, the 2 events have litigation historical past: MasterObjects has filed a number of patent infringement lawsuits in opposition to Amazon since 2011.

The opinion states, “Of principal concern right here, the important thing limitation within the declare recited above is directed to the system’s use of a “cache” to offer autocomplete outcomes… All the opposite claims – in – swimsuit equally reference a cache in addition to a “knowledge supply” (or “content material sources”) … The lay reader will doubtless have a common consciousness of a cache within the computing sense, equivalent to an internet browser (e.g., Mozilla Firefox) storing an iteration of a beforehand visited webpage (e.g., cand.uscourts.gov).  This order addresses using the time period “cache” by the patents-in-suit.”

The choose summarized what they described as MasterObjects’ “greatest” argument: “although the autocomplete question is just not saved in a ‘cache,’ the accused system generates a sequence of prefixes — certainly one of which by definition should correspond precisely to the question — and shops them in a ‘cache.’”

However, the choose says, the argument fails as Amazon’s autocomplete key phrase database is constructed from prior product searches, not from autocomplete outcomes just like the claimed techniques.

The opinion concludes that Amazon’s system doesn’t observe the claimed cache-and-data-source construction as claimed in MasterObject’s lawsuit; thus, there is no such thing as a patent infringement.

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Amazon is represented by Hueston Hennigan. MasterObject is represented by Hosie Rice, Heim, Payne & Chorush, and Zuber Lawler.