DPH Holdings Corp. (also written DPH Holdings Corporation), formerly and better known as Delphi Corporation, is the legacy entity left behind after Delphi's reorganization. It shares the Delphi name and Troy, Michigan address (5725 Delphi Drive) but is not the operating auto supplier now known as Aptiv/Delphi Technologies. Delphi was spun off from General Motors in 1999; the company filed Chapter 11 in October 2005 in the U.S. Bankruptcy Court for the Southern District of New York and emerged in 2009. DPH Holdings is the "Predecessor" reorganized debtor responsible for winding up the estate. It ceased SEC filings in November 2009 and its shares (ticker DPHIQ) are no longer traded on any major exchange, making it a private, non-operating liquidating entity. No current employee count or revenue figure is verifiable; a third-party directory lists legacy figures that cannot be confirmed.
Operations. Delphi was formerly a global automotive supplier of mobile electronics and transportation systems — powertrain, safety, thermal, controls and security systems, electrical/electronic architecture, and in-car entertainment technologies. Those businesses were acquired in 2009 by Delphi Automotive LLP and later housed in Delphi Automotive PLC (now Aptiv). DPH Holdings itself has no ongoing manufacturing operations; its remaining activity is estate administration, residual real-property/environmental obligations, and legacy litigation. In 2013 it funded a $23.1 million environmental response trust to clean up four former Delphi plant and landfill sites in Michigan and Ohio.
Litigation posture. In the tracked data, DPH Holdings appears as a defendant only (1 case, 0 as plaintiff), consistent with an operating company/estate defending against patent assertions rather than a patent-assertion entity. The one tracked matter, Automotive Technologies International, Inc. v. Delphi Corp. et al., was heard in the E.D. Mich. before Judge Robert H. Cleland — not a plaintiff-friendly NPE venue.
Notable case. The dispute began as a Delphi declaratory-judgment action challenging patents held by Automotive Technologies International; it consolidated with ATI's Texas suits against OEM customers over Delphi's "Passive Occupant Detection System" (PODS) airbag technology. On March 9, 2011, Judge Cleland granted summary judgment invalidating four ATI patents (Nos. 6,833,516; 7,243,945; 7,407,029; 6,484,080) as anticipated or obvious. ATI appealed to the Federal Circuit.
Sources: U.S. DOJ/EPA press releases and Federal Register notices; Delphi Automotive PLC SEC filings; Bloomberg company profile; RPX Insight; CourtListener/Justia.