Reported / Citable
Background
K.Mizra LLC sued NXP USA, Inc. for patent infringement of six patents covering high-speed signaling systems, memory controller functionality, and calibration techniques used in semiconductor products. K.Mizra alleged that NXP’s products—including various Application Processors and Layerscape Processors equipped with PCIe 3.0, DDR3, DDR4, DDR5, LPDDR3, and LPDDR4 controller functionality—directly infringed claims from U.S. Patents 8,183,887; 8,693,556; 9,437,279; 10,331,379; 9,160,466; and 9,111,608. NXP moved to dismiss under Federal Rule of Civil Procedure 12(b)(6), arguing the complaint’s allegations were either implausibly pleaded or failed to adequately identify the accused devices.
The defendant contended that K.Mizra’s factual allegations either had nothing to do with the accused products or accused different functionality than claimed, that using “exemplary” products and asserting “similar” infringement in other products was insufficient notice, and that various purported mismatches between the patent specifications and the accused technology rendered infringement implausible as a matter of law.
The magistrate judge recommended denying NXP’s motion to dismiss all six direct infringement claims. The court held that K.Mizra satisfied the “notice and plausibility” standard required at the pleading stage by identifying accused devices and functionalities with sufficient specificity to put the defendant on notice of what it must defend. Citing Federal Circuit precedent, the court emphasized that patent plaintiffs need not prove infringement element-by-element at the pleading stage and need not prove their case at all—only plausibly allege it.
The court rejected NXP’s arguments on multiple grounds. First, it found K.Mizra’s use of one product as an “exemplary” accused device, combined with allegations that other products with “similar” or “materially similar” functionality infringe in the same manner, provided sufficient notice at the pleading stage. Second, where the parties disputed claim construction issues—such as whether “write leveling” procedures satisfied claim language or whether “read calibration” and “write calibration” were fundamentally different—the court declined to resolve these disputes on a motion to dismiss, holding that such arguments are generally reserved for claim construction proceedings. The court noted that if both parties can identify portions of the patent specification supporting their interpretations, the non-moving party deserves notice and opportunity to be heard before claim terms are construed against them.
As to indirect infringement, the court found that because direct infringement was adequately pleaded for each patent, and direct infringement is a prerequisite to indirect infringement, the indirect claims also survive dismissal.