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5E Advanced Materials Files Foundational U.S. Patent to Protect Closed-Loop In-situ Boron Mining and Production Technology
Claims Would Strengthen Competitive Moat and Reinforce Market LeadershipOmnibus Application includes 167 Invention Claims Covering 5E's End-to-End Borate
About this update from 5e Advanced Materials, Inc.
[{"type":"text","content":"Claims Would Strengthen Competitive Moat and Reinforce Market LeadershipOmnibus Application includes 167 Invention Claims Covering 5E's End-to-End Borate Mining, Bolstering Long-term IP Protection HESPERIA, CA / ACCESS Newswire / December 17, 2025 / 5E Advanced Materials, Inc. (\"5E\" or the \"Company\") (Nasdaq:FEAM)(ASX:5EA), a U.S. development-stage company focused on becoming a vertically integrated global leader and supplier of refined borates and advanced boron derivative materials, has filed an omnibus application with the United States Patent and Trademark Office (USPTO) for a proprietary, closed-loop in-situ leach (ISL) mining and production process that has lowered 5E's operating costs, reduced its environmental footprint, and, if granted, will create meaningful barriers to competitors seeking to replicate the Company's ISL technology. The patent application includes 167 claims covering 5E's mining process and production for boric acid, gypsum, sodium chloride, as well as the management of metal impurities. Over the coming weeks, 5E intends to file several additional standalone applications. The patents would form a cornerstone of 5E's intellectual property portfolio, covering key steps from injection to recovery, processing, and reinjection.\"With 5E filing the omnibus application, we are taking an important step to secure the intellectual property that underpins our differentiated ISL mining and processing platform that has led to our technical successes,\" said Paul Weibel, Chief Executive Officer of 5E Advanced Materials. \"5E performed ISL pilot operations in the 1980's and has been mining consistently for nearly two years. Building on this experience, our team developed a closed-loop process designed to lower costs, improve sustainability, and enhance mining efficiency. This patent filing is intended to protect that know-how and support our long-term commercial and strategic objectives through the protections provided by the USPTO.\"ISL borate mining techniques at the Fort Cady Project trace back to pilot programs in the early 1980s with the discovery of mineral resources dating to 1964. Primary exploration work and land acquisition occurred over the next two decades. A series of ISL pilot programs occurred on three separate occasions from 1981 to 1982, 1986 to 1987, and 1987 to 1988. The major permitting initiat...