Company overview. Industrial Enclosure Corporation, doing business as Palmer Digital Group (PDG), is a privately held manufacturer headquartered at 619 N. Loucks Street in Aurora, Illinois. The parent company, Industrial Enclosure Corporation (IEC), was founded in 1975 by John Palmer; PDG was launched in late 2018 as its digital-display division. No public revenue or headcount figures are available — the company does not publish financials, and public sources (CB Insights, trade press) provide only qualitative growth commentary (PDG reported year-over-year growth of 40–50% since 2019).
Products / services / operations. IEC fabricates custom and modified-standard UL-certified electrical enclosures for industries including food and beverage, oil and gas, water treatment, utilities, energy, and transportation. Under the PDG brand, the company designs and manufactures indoor and outdoor digital kiosks, drive-thru digital menu boards, and canopy systems, all built at its Aurora facility, and offers end-to-end installation services (permitting, concrete, and electrical work). Its primary end markets are quick-service restaurants, with expansion into retail, healthcare, transportation, and education.
Patent-litigation posture. This is an operating company, not a non-practicing entity — it manufactures physical products and holds no asserted patent portfolio of its own. The case data shows one tracked appearance as the moving ("plaintiff"-side) party: Samsung Electronics Co., Ltd. et al. v. Manufacturing Resources International, Inc. (2022-12-15), an inter partes review at the PTAB. The company has zero appearances as a defendant.
Notable cases / context. The tracked PTAB matter stems from a broader dispute: in August 2022, Manufacturing Resources International (MRI) of Alpharetta, Georgia filed an ITC Section 337 complaint (Inv. No. 337-TA-1331) naming PDG, several Samsung entities, and Coates Signco as respondents, alleging infringement of five patents covering cooling systems for outdoor and semi-outdoor electronic displays, with a parallel suit against Samsung in the Eastern District of Texas. The IPRs were filed by Samsung (with PDG as a related party/respondent in the underlying ITC case) challenging MRI's patents. The ITC ultimately issued a final determination of no infringement and terminated the investigation (2023–2024), and MRI's Federal Circuit appeal was dismissed in August 2024.