Adtran Holdings Inc (Adtran) is a provider of networking and communications software, and services focused on the broadband access market worldwide.

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Adtran’s research and development (R&D) arm focuses on developing new innovative solution and enhancing the existing technologies to support data, voice, and video transport over optical and IP/Ethernet network architectures to sustain in the rapidly changing technology and evolving markets. It carries out its activities in the facilities located in the US, Israel, Europe, and Asia. In FY2022, the company incurred expenses of US$173.8 million in R&D activities, which as a percentage of revenue, stood at 16.9%. As of December 2022, the company had more than 1,000 patents worldwide and over 50 pending patent applications.