USPTO records indicate that late last month, K.Mizra LLC acquired over 100 US patent assets—plus foreign counterparts—from Rambus Inc. The assignment was executed just as a campaign involving former Rambus patents, this one waged by a different NPE, came to an apparent close.

Last week, RPX reported that Rampart Asset Management LLC—formed in Texas by Peter J. Hardigan—had expanded its memory controller campaign with a case against TI, preceded by 2021 suits against each of NXP Semiconductors and Renesas Electronics. The asserted patents are a small subset of the more than 80 US patents assets that Rambus Inc. assigned to another entity, apparently also under Hardigan’s control, in August of last year.

Rampart Asset Management LLC, a Texas plaintiff, has expanded the memory controller campaign that it began late last year against first NXP Semiconductors and then Renesas Electronics with a 2022 case, this one filed against TI (2:22-cv-00024) in the Eastern District of Texas. The six asserted patents are broadly directed to either computer memory or integrated circuit calibration, with the plaintiff describing them as covering technologies “for coordinating memory operations and providing data patterns for calibration of memory systems”. The patents are among more than three dozen that Rambus Inc.—which currently available USPTO records indicate holds close to 3,500 US patent assets—assigned to an entity that suggests more litigation from this particular source could well be coming.