I'll research this entity before writing the profile.
Tri-County Excelsior Foundation is a Texas non-profit corporation based in Marshall, Texas (Harrison County). It has no public ticker and no disclosed revenue or headcount; it is a supporting organization to CASA of Harrison County, a charity that trains volunteer advocates for abused and neglected children. No employee, revenue, or founding-date figures are verifiable from public sources.
Operations. The Foundation runs no product or service business. It functions as a patent-holding vehicle: in 2010, Azure Networks LLC donated a portfolio of wireless-networking patents to the Foundation, which then granted Azure an exclusive license back, retaining 33% of litigation/licensing proceeds for the first five years and 5% thereafter. The asserted portfolio covers personal-area-network and peripheral-device technology — notably U.S. Patent 7,020,501 (device power monitoring/control), 7,756,129 ("Personal Area Network with Automatic Attachment and Detachment"), and 8,582,571 — originally developed at BBN Technologies.
Litigation posture. The tracked data shows 1 case as plaintiff and 0 as defendant, consistent with a non-practicing entity rather than an operating company. The single tracked suit was filed in the plaintiff-friendly Eastern District of Texas, Tyler Division.
Notable case. Azure Networks LLC et al. v. Texas Instruments Incorporated et al., No. 6:10-cv-00681 (E.D. Tex., filed Dec. 22, 2010), named Texas Instruments, Atmel, Freescale, NXP, and Microchip as defendants. External sources (Stanford NPE database, court records) indicate the Foundation appeared as co-plaintiff with Azure in several related E.D. Tex. suits against semiconductor and handset makers. In Azure Networks, LLC v. CSR, PLC (Fed. Cir., Nov. 6, 2014), the Federal Circuit held that the Foundation, as a nonexclusive licensee, lacked standing to assert the patent and had properly been dismissed as co-plaintiff.