There has been a small victory over the last couple of years.
In the UK, Big West won against Harmony Gold with the Macross Trademark, so HG isn't winning everywhere.
Also, we have not seen a proper challenge to HG's claim over the Macross Trademark in the US by Big West.
If they ever challenge it, chances are high (since Big West won against Tatsunoko and now owns the 41 designs/images from Macross that constitute all the characters, vehicles, and Valkyries) that HG would lose since they haven't produced any new product for Macross since the 1990s. I understand that Tatsunoko owns the commercial distribution rights to the original SDF Macross in so far as that specific TV show is concerned, but not the trademark to the images/designs in Macross (obviously). The IP of Macross artwork is owned by Studio Nue and Big West. What that means for HG is no sequels, and no derivatives of Macross in any new work. They're stuck. If Sony does make their rumored live-action movie, and it contains original Macross designs, then Big West has a case (whether they pursue it or not is questionable).
Worse yet, Robotech is a toxic brand because HG has been suing anybody and everybody that has anything remotely similar to Macross mecha. That soured their own fanbase decades ago and since they cannot make new Macross sequels, they're stuck with Southern Cross and Mospeada (neither of which are very popular).
Even though they own the rights to distribute the Robotech version of Macross, no one wants it so it is a Pyrrhic victory for them.
Also, China just ruled in favor of Big West giving them full control of the Macross IP and Trademark in China.
https://www.wipo.int/documentaccess/...cid=1244980501
It would seem that Big West is finally defending Macross as their property.