I don't know about trademarks, etc.
Uhersky Brod is, with regard to the 75B line, the "original" CZ, and the only CZ that had anything to do with the CZ-75 line.
The following is from The Fjestad Blue Book, heavily excerpted and parts deleted:
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"Ceska Zrojovka Strakonice begain develoing many innnovative and revolutionary pistol design. These modesl, including the CZ-24, CZ-27, and CZ-52 are certainly well-known throughout the world. During the 1950's, CZ's facilities were conerted to making motorcyles and precision engineering products.
Ceska Zrobjoyva, located in the town of Uhersky Brod, was founded in 1936, as a subsdisiayr of Ceska Zbrokjovka Strakonice, in a government decision deisnged to move firearms production farther away from the German border, and out of the reach of German bombers....
Shortly after wwII Ceska Zbrojovka Uhersky Brod resumed production of firearms fror the civilian marketplace... Up to this pointk the main pistol producer in Czechoslovakia was CZ Strakonice... The CZ-52 pistol was the last model they produced. Since the end of the 1950s, Ceska Zbrojovk Uhersky Brod has beocme the sole producer of poistols.
During 1964-66 the Czech government transferred the production of long guns from Zbrojovka Brno to Ceska Zbrojovka Uhersky Brod.
...During 1975, Ceska Zborjovha Uhersky Brod designed and began manufacture of the famouse CZ-75 poistol..."
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The "Original CZ," touted by ADCO, the company that imported the TT series was original in name only, and they apparently have rights to the name, but not to the tradition, or any meaningful history or experience in the gun making business. (Sort of like the Packard Bell computers of the 90's -- a great name applied without history or tradition.)
The guns they sell are Tanfoglio clones that have been modified slightly in the Czech Republic. The Blue Books says that these are the "Strakonice"-made guns... but it appears they are mostly Italian-made guns with mods.
ADCO seems to be in the process of shifting to Turkish-made clones, rather than Italian-made clones, so that will lead to a really interesting marketing proposition in the coming years.