AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's largest telecommunications company, the largest provider of mobile telephone services, and the largest provider of fixed telephone services in the United States through AT&T Communications. Since June 14, 2018, it is also the parent company of mass media conglomerate WarnerMedia, making it the world's largest media and entertainment company in terms of revenue. As of 2018, AT&T is ranked #9 on the Fortune 500 rankings of the largest United States corporations by total revenue.

Designs and builds a wide range of public and private networks, communications systems and software, and data networking systems, as well as telephone systems and microelectronic components

Gilat Satellite Networks Ltd. engages in the provision of broadband satellite communication and networking solutions and services. It operates through the following business segments: Fixed Networks, Mobility Solutions, and Terrestrial Infrastructure Projects. The Fixed Networks segment provides advanced fixed broadband satellite communication networks, satellite communication systems and associated professional services and comprehensive turnkey solutions and fully managed satellite network services solutions. The Mobility Solutions segment provides advanced on-the-move satellite communications equipment, systems, and solutions, including airborne, maritime and ground-mobile satellite systems and solutions. The Terrestrial Infrastructure Projects segment provides network infrastructure construction of the fiber and microwave network of PRONATEL in Peru. The company was founded by Yoel Gat, Gideon Kaplan, Amiram Levinberg, Joshua Levinberg, and Shlomo Tirosh in 1987 and is headquartered in Petah Tikva, Israel.

Expanding 4.5 million fixed lines to 20 million in just 12 years, kt introduced universal telephone service to every citizen of Korea, leading the development and advancement of communications services. More recently, kt established an advanced broadband network for the first time in Asia, and launched Korea's first communication satellite 'Mugunghwa (Sharon's Rose)', contributing to making Korea one of the most advanced countries in information and communications. Since becoming a government-funded corporation in 1997, kt changed its business portfolio to focus more on wireless and internet services instead of fixed lines. Taking over Hansol M.com and merging with its subsidiary KTF, kt expanded its business scope and included mobile communication as its main service. kt became a privately owned company in 2002 and began concentrating on building broadband network. As a result, the company set several new records including the increase of ADSL subscribers to 6 million in just 3 years and played a leading role in the age of digital networking.

NEC Communication Systems Ltd. develops network system software for telecom carriers, communication equipment and embedded software for devices. It develops and offers operation support, business support, and mobile core network systems, as well as network service platforms for transport, access, and service and management network systems. The company was founded in January 1980 and is headquartered in Tokyo, Japan.

SK Telecom Co., Ltd. (Hangul: SK텔레콤 or 에스케이텔레콤) is a South Korean wireless telecommunications operator; it is part of the SK Group, one of the country's largest chaebols. SK Telecom is South Korea's largest wireless carrier: it leads the local market with 50.5 percent share as of 2008. Since its creation in 1984, the company has evolved from a first generation analog cellular system, to second generation CDMA, then to the world's first third-generation synchronized IMT-2000 cellular system. SK Telecom also became the world's first carrier to commercialize HSDPA in May 2006. SK expanded into the landline market by acquiring second-rated fixed-line operator Hanaro Telecom in February 2008.

Fujitsu Ltd. engages in the provision of information technology (IT) services. It operates through the following segments: Technology Solutions, Ubiquitous Solutions, and Device Solutions. The Technology Solutions segment provides system integration, consulting, outsourcing, cloud, network, and system support services. It also offers system and network products such as servers, storage systems, software, network management systems, and mobile base stations. The Ubiquitous Solutions segment covers personal computers (PCs). The Device Solutions segment includes electronic components such as semiconductor packages and batteries. The company was founded on June 20, 1935 and is headquartered in Tokyo, Japan.

QUALCOMM, Inc. engages in the development, design, and provision of digital telecommunications products and services. It operates through the following segments: Qualcomm CDMA Technologies (QCT), Qualcomm Technology Licensing (QTL), and Qualcomm Strategic Initiatives (QSI). The QCT segment develops and supplies integrated circuits and system software based on technologies for the use in voice and data communications, networking, application processing, multimedia, and global positioning system products. The QTL segment grants licenses and provides rights to use portions of the firm's intellectual property portfolio. The QSI segment focuses on opening new or expanding opportunities for its technologies and supporting the design and introduction of new products and services for voice and data communications. The company was founded by Franklin P. Antonio, Adelia A. Coffman, Andrew Cohen, Klein Gilhousen, Irwin Mark Jacobs, Andrew J. Viterbi, and Harvey P. White in July 1985 and is headquartered in San Diego, CA.

Mercury Corp. designs and manufactures telecommunications equipment. Its products include Fiber, Network, Access, and Voice Switch. The company was founded on August 21, 2000 and is headquartered in Incheon, South Korea.

NEC Corp. engages in the provision of systems, components, services, and integrated solutions for computing and communications applications. It operates through the following segments: Public Business, Enterprise Business, Telecom Carrier Business, System Platform Business, and Others. The Public Business segment provides system integration (system architecture and consulting), support (maintenance), outsourcing and cloud services, and system equipment for public, medical and financial institutions. The Enterprise Business segment offers information technology solutions for manufacturing, retail, and services. The Telecom Carrier Business segment supplies equipment to telecom carriers for network implementation, along with network control platform systems and operating services. The System Platform Business deals with products from business such as from terminals to network and computer equipment, software products, and service platforms. The Others segment includes smart energy solutions, mobile phones, and lighting equipment businesses. The company was founded by Kunihiko Iwadare on July 17, 1899 and is headquartered in Tokyo, Japan.

WSOU Investments LLC engages in leveraging its proprietary technology and management experience to inventors and patent owners maximize their patents. It takes on license negotiations, infringement, and consultancy services for patent purchases and dispositions. The company is headquartered in Waco, TX.

Beijing Micom Tech Communication Technology Co., Ltd., established on 2011-06-24, Business scope includes production and processing of electronic products;technology development,technology transfer,technical consulting,Technical Services;selling computers,Software and Auxiliary Equipment(Except for special products for computer information system security),communication equipment,electronic product;Import and export.(Enterprises independently choose operating projects according to law,Carry out business activities;Items subject to approval by law,Carry out business activities in accordance with the approved content after approval by relevant departments;Do not engage in the business activities of projects prohibited and restricted by the city's industrial policies.)

Beijing Waitong Electronic Technology Co., Ltd., established on 1993-03-27, Business scope includes communication equipment,electronic calculator,Machinery and electrical equipment,Technical Development of Special Vehicle Modification,Technical Contracting,technology transfer,Technical Services;Safety technology prevention engineering design,construction;Radio Technology Design,construction;computer technology training;Conference Services;technical consulting;Sales Wujinjiaodian,medical equipment,metallic material,Chemical Products(Does not contain dangerous chemicals and a class of precursor chemicals),auto parts,building materials,department store,Labor protection supplies;Import and export,Technology Import and Export,Agent import and export.(Market entities independently choose business projects in accordance with the law,Carry out business activities;Items subject to approval by law,Carry out business activities in accordance with the approved content after approval by relevant departments;Do not engage in the business activities of projects prohibited and restricted by the industrial policies of the state and this city.)

Ericsson, Inc. develops and markets wireless infrastructure equipment. Its products include antennas, transmitters, switching systems and other gears used to build wireless networks. The company was incorporated in 1992 and is headquartered in Plano, TX.

International Business Machines Corp. is an information technology company, which engages in the provision of integrated solutions that leverage information technology and knowledge of business processes. It operates through the following segments: Software, Consulting, Infrastructure, Financing, and Other. The Software segment combines hybrid cloud platform and software solutions to help clients become more data-driven, and to automate, secure, and modernize their environments. The Consulting segment focuses on integrating skills on strategy, experience, technology and operations by domain and industry. The Infrastructure segment offers solutions for hybrid cloud, and is the foundation of the hybrid cloud stack. Infrastructure is optimized for infusing AI into mission-critical transactions and tightly integrated with IBM Software including Red Hat for accelerated hybrid cloud benefits. The Financing segment refers to the client and commercial financing, facilitating IBM clients’ acquisition of IT systems, software, and services. The company was founded by Charles Ranlett Flint and Thomas J. Watson Sr. on June 16, 1911 and is headquartered in Armonk, NY.

ETRI is the largest government funded research institute in Korea, which strives to advance science by means of formulating innovative ideas; developing new techniques; and training professional individuals in the area of information telecommunications to ultimately enhance social and economical aspects of the modern society.

RPX Corporation (NASDAQ: RPXC) is a leading provider of patent risk solutions, offering defensive buying, acquisition syndication, patent intelligence, insurance services, and advisory services. Since its founding in 2008, RPX has introduced efficiency to the patent market by providing a rational alternative to litigation. The San Francisco-based company’s pioneering approach combines principal capital, deep patent expertise, and client contributions to generate enhanced patent buying power. By acquiring patents, RPX helps to mitigate and manage patent risk for its growing client network. Clients pay annual fees ranging from $60,000 to $6.6 million depending on company size, and automatically receive rights to the entire RPX patent portfolio. As of September 30, 2012, RPX had invested over $500 million to acquire more than 2,950 US and international patent assets and rights, and had a client network of 128 members active in seven key sectors: consumer electronics and PCs, E-commerce and software, financial services, media content and distribution, mobile communications and devices, networking, and semiconductors. RPX promises it will never assert patents or patent rights in its portfolio.