The jury determined that the controversial 1976 "agreement" between Tsuburaya and Thai businessman Sompote Saengduenchai and Chaiyo Productions to be "not authentic" and that state that the document was not signed by Noboru Tsuburaya, the son of Eiji Tsuburaya and then president of Tsuburaya Productions.
The agreement states that Tsuburaya Productions has transferred the international distribution rights of the first six Ultraman shows and Jumborg Ace to Sompote and his Chaiyo Productions. These six shows are: Ultra Q, Ultraman, Ultra Seven, Return of Ultraman, Ultraman Ace, and Ultraman Taro. What makes this agreement interesting is that the document contains a lot of inconsistencies and errors, such as the names of the shows mentioned (Ultra Seven being labelled "Ultraman 3: Ultraman Seven" for example) and that authenticity of the seal found in the document. The current location of said document is unknown, leading to Tsuburaya Productions to consider said document invalid and perhaps even a forgery.
Lastly, before the trial began, one of the things asked by the judge and lawyers is a copy of Sompote's passport, which would indicate that he was in Japan on March 4, 1976, making the agreement valid in context. The document provided was inconsistent as the pages stamped with locations and dates of entries and exits in question are separate images, making it unclear if these pages are from the same passport.
[Source: SciFi Japan via Tokusatsu Network, additional info: Wikipedia]