It's interesting to hear Robotech mentioned on a site where intellectual property law is often discussed, without mention of the controversy surrounding its IP. When Harmony Gold USA created Robotech, it did so using exclusively licensed footage from a Japanese multimedia franchise called Macross. In the 30 years since, many new Macross works, including anime representing some of the most innovative uses of music-in-film-as-a-critical-plot-point (of great interest to a musical theater listener like myself!), have been produced in Japan to great critical acclaim, but their legal import and streaming into the US has been consistently suppressed by Harmony Gold, which maintains that it has the exclusive rights to the Macross trademark in the US [2]. From one perspective, Harmony Gold USA played a pivotal role in bringing anime to the US, and it's only rational that they be allowed to harvest from their Robotech brand without diluting it with Macross competitors. But it's a frustrating situation for Macross fans.

[1] https://en.wikipedia.org/wiki/Diegesis#Film_sound_and_music

[2] http://kotaku.com/5990702/why-you-havent-seen-any-new-macros...