Arkema sues HighChem in Japan for patent infringement on HFO-1233zd(E)
Arkema brings before Japanese courts an industrial property dispute targeting the Tokyo-based company HighChem concerning patents related to HFO-1233zd(E).
Proceedings opened before the Tokyo District Court
Arkema announced on September 17, 2026 that a patent infringement action was filed on July 21, 2026 against HighChem Co., Ltd., a company based in Tokyo. The proceedings were introduced before the Tokyo District Court, under the reference Reiwa 8 (Wa) No. 170625.
A dispute centered on HFO-1233zd(E)
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The action concerns HFO-1233zd(E), at the heart of the industrial property dispute between Arkema and HighChem. Arkema, whose headquarters is located in Puteaux, is acting on the grounds of patent infringement concerning HFO-1233zd(E).
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