The Curtiss-Wright complaint

The case is Big Will Enterprises Inc. v. Curtiss-Wright Corporation, No. 1:26-cv-02973 (W.D. Tex.), a complaint for patent infringement filed October 21, 2026, on U.S. Patent Nos. 9,049,558, 8,737,951, and 8,452,273. The docket lists Brett T. Cooke as counsel for Big Will, records a jury demand by the plaintiff, and notes that no summons was requested at the time of filing. Big Will also filed a Rule 7 disclosure statement, a notice of the patent filing to the USPTO, and a notice of related cases on October 21. The complaint itself is not on the public docket.

The exhibits listed on the docket

The docket entry for the complaint lists eleven exhibits. Exhibits 1 through 3 are copies of the three patents. Exhibits 4 through 11 carry these titles: "CPQAR"; "CPQAR Overview"; "CW Boots High-Speed Wireless DA Support"; "User Manual, G-Link-200"; "G-Link-200 Inclinometer Channel Setup"; "SensorConnect Changelog"; "Using the KAM/WSI/104"; and "KAM/WSI/104/C Product Specification."

The three patents

U.S. Patent No. 9,049,558, titled Systems and Methods for Determining Mobile Thing Motion Activity (MTMA) Using Sensor Data of Wireless Communication Device (WCD) and Initiating Activity-Based Actions, issued June 2, 2015. U.S. Patent No. 8,452,273, titled Systems and Methods for Determining Mobile Thing Motion Activity (MTMA) Using Accelerometer of Wireless Communication Device, issued May 28, 2013. Both claim priority to provisional applications filed August 30, 2012. U.S. Patent No. 8,737,951, titled Interactive Personal Surveillance and Security (IPSS) Systems and Methods, issued May 27, 2014 and claims priority to a provisional application filed January 16, 2008.

Claim 1 of the '558 patent covers a method that receives a time value and at least three streams of sensor data from a wireless communication device transported by a mobile thing, recognizes a particular set of data samples as a reference for the device's orientation in a coordinate system, computes reference data relating later samples to that reference set, calculates movement data in the coordinate system, and determines the mobile thing's motion activity from that movement data. Claim 1 of the '273 patent recites a similar method that uses three streams of accelerometer data along the axes of a three dimensional coordinate system and calculates movement data in a two dimensional coordinate system.

Claim 1 of the '951 patent covers a wireless communications device whose code enters a first mode of operation with a first investigation process that captures data with sensors, determines whether the data indicates an activity relating to a user need for assistance, an accident, or a crime, and, when it may, enters a second mode with a different investigation process to capture further data about the activity.

USPTO records show that each of the three patents lapsed for failure to pay a maintenance fee and was reinstated when the USPTO accepted the late fee. The '951 patent lapsed effective May 27, 2018 and was reinstated effective July 10, 2019, then lapsed again effective May 27, 2022 and was reinstated effective September 22, 2022. The '273 patent lapsed effective May 28, 2021 and was reinstated effective September 22, 2022. The '558 patent lapsed effective June 2, 2023 and was reinstated effective November 14, 2023.

The Big Will campaign

Big Will has asserted the same patents in other recent suits. In Big Will Enterprises Inc. v. Enterprise Holdings Inc., No. 1:26-cv-00652 (W.D. Tex.), filed March 18, 2026, Big Will asserted the '558, '951, and '273 patents along with U.S. Patent No. 10,521,846, and described itself as a British Columbia company incorporated in Canada. On September 27, 2026, Big Will sued Nexxiot Inc. in the Eastern District of Texas, No. 4:26-cv-01384, attaching the '558, '951, and '273 patents as exhibits. That case is assigned to Judge Michael J. Truncale.

Companies have also sued Big Will. GATX Corporation filed a declaratory judgment complaint in the Northern District of Illinois on July 17, 2026, No. 1:26-cv-08492, then filed a notice of voluntary dismissal without prejudice on September 1, and the court terminated the case on September 2. Union Tank Car Company sued Big Will in the same court on August 19, No. 1:26-cv-10014, and filed a notice of voluntary dismissal on August 25. On October 1, RailPod, Inc. filed RailPod, Inc. v. Big Will Enterprises Inc., No. 1:26-cv-14482 (D. Mass.), seeking declaratory judgments of non-infringement and invalidity of the '558, '273, and '951 patents and U.S. Patent No. 8,559,914, and asserting a claim under Mass. Gen. L. c. 93A, sections 2 and 11. RailPod's complaint alleges that Big Will sent it a Notice of Infringement on the four patents, and it lists 33 Big Will infringement suits filed in Texas federal courts from January 2020 through September 2026.

What to watch next

Watch for the docket to name the assigned judge, for a summons and service on Curtiss-Wright, and for an answer, a Rule 12 motion, a motion to transfer venue, or a dismissal.

Also watch for rulings in the RailPod declaratory judgment case in Massachusetts and for further Big Will suits on the '558, '951, and '273 patents.