先願主義 せんがんしゅぎ Meanings Noun first-to-file principle (in patent law); first-to-file system See also: 先発明主義 (せんはつめいしゅぎ). Kanji 先 ahead. Read as セン. 願 wish. Read as ガン. 主 main. Read as シュ. 義 justice. Read as ギ. Jinuma: Japanese Dictionary · Word lists