[Title of the case] “Retweet” (Copyright)

[Key issue] Infringement of moral right of author of Articles 19(1) and 20 of the Copyright Act.

Court stated that, concerning the so-called “Retweet,” there was no infringement of copyrights (reproduction right, right to transmit to the public, right of communication to the public), but that there was infringement of moral right of the author (right to determine the indication of an author’s name, right to maintain integrity).