By way of background. The Agfa plant wolfen post WWII was taken over by its East German successor VEB Film und Chemiefaserwerk Agfa Wolfen. In 1964 they adopted the name OrWo = Original Wolfen.
This name change was adopted because they couldnt sell their film in the west under the Afga brand, which was owned by Agfa-Gevaert.
They did sell their films in the West, but rights in the West were claimed/owned by western-Agfa. Agfa-Gevaert was still to come into existence. Which was in 1964 with the merger of Gevaert with western-Agfa. About the same time eastern-Agfa finally cut business with their western-offspring.
Due to unexplainable cause during soviet or german postwar ownership and the times of splitting up IG-Farben the people at Agfa missed chances to keep trademarks when in the West a new, still tiny Agfa was established, which took these rights. But to be fair: the trademarks were only one disadvantage the Agfa-Wolfen plant had in selling their films in the West. There was a complicated situation of bilateral dependencies between both plants. Over time, added by inflexibility of the eastern side, the advantage moved to the Agfa-Leverkusen side. To end the situation for good it was decided in Berlin and Wolfen to make the best of it by re-starting internationally under a new brand (Orwo), added by a huge marketing campaign. A campaign that in the long run failed.
In hindsight it seems funny that western-Agfa themselves decades later got (some minor) trademark trouble themselves, as hinted at above...
