Defendant
1 case as defendant.
D-Link Corporation is a Taiwanese multinational manufacturer of networking hardware, founded in 1986 as Datex Systems, Inc. The company is headquartered in Taipei, Taiwan, and is publicly traded on the Taiwan Stock Exchange (TWSE: 2332). D-Link's U.S. subsidiary is D-Link Systems, Inc. For the twelve months ending in late 2025, the parent company's revenue was approximately $429 million. Sources estimate its global employee count to be between 960 and 2,722 people.
D-Link is an operating company that designs, develops, and manufactures a wide range of connectivity products for consumers, small to medium-sized businesses (SMBs), and enterprises. Its major product lines include Wi-Fi routers, network switches, wireless adapters, IP surveillance cameras, and smart home devices. The company sells networking solutions globally, covering wireless LAN, broadband, and digital home appliances.
The company's patent litigation history reflects its status as an operating company. The database shows D-Link Systems, Inc. as a defendant in one case and a plaintiff in none. This posture is typical of a technology manufacturer defending itself against patent assertions rather than initiating litigation. The single tracked case was filed in the U.S. District Court for the Southern District of California.
The case, filed in 2012, was MPHJ Technology Investments, LLC v. D-Link Systems, Inc. The plaintiff, MPHJ, is a non-practicing entity (NPE) that was widely described as a "patent troll." MPHJ acquired patents related to network scan-to-email technology and sent thousands of demand letters to small businesses. The Federal Trade Commission (FTC) later took action against MPHJ, which settled charges that it used deceptive claims and threats in its patent assertion campaigns.
This case was part of a broader, multi-district litigation strategy by the plaintiff. The case was terminated, which often suggests a settlement or dismissal.