ESL issued several DMCA notices to a few streamers who were streaming their ESL One Genting matches. However, the streams were from Dota TV and hence technically owned by Valve. That being said, ESL does not have authority to actually issue DMCA notices for content that does not belong to them. As long as the streamers do not stream content unique to ESL, the content is owned by Valve.
#ESLOne Genting update & clarification: there will be no actions or takedowns from ESL for unmonetized/non-commercial ESL One Genting streams.
— ESL Dota2 (@ESLDota2) January 25, 2018