打官司 (dǎ guān si) means “to file a lawsuit; to sue; to dispute”. It is an HSK 6 Chinese word in the HSK 3.0 vocabulary.
Practice each character:
两家公司因专利问题打官司。
Liǎng jiā gōngsī yīn zhuānlì wèntí dǎ guān si.
The two companies sued each other over patent issues.
Updated: 2026-05-27