The Ehime University team participated inthe Japanese-to-English Patent Claim Trans-lation Task at WAT 2025. We experimentedwith (i) Judge and Refinement, (ii) SpecializedPrompting, and (iii) Few-Shot approaches, us-ing GPT-5 as the underlying LLM. Evaluationbased on the LLM-as-a-Judge framework con-firmed improvements for (i), while (ii) and (iii)showed no significant effects.