I dont know if this will clarify, but heres A Quote from The Ultimate History Of Video Games, By Steven L. Kent:
QUOTE
Data East Vs. Epyx
In 1984, Data East released a game titled Karate Champ. Though it was not the first two-player fighting game (The first two player fighting game was Warrior, Released by Cinematronics in 1979),it was the first two-player martial arts tournament game and the progenitor of a genre that in the early 1990s would become extremely popular. In Karate Champ, Players controled a martial artist as he battled Computer-controlled fighters in tornament-style combat. (Karate Champ had two-player simultsneous action as well.) It featured several realistic blocks, kicks and punches and had a large, relatively humen-looking characters. The game was a modest hit in the arcades.
In October 1985, Data East released a home version of Karate Champ for the Commodore 64 computer. One month later, the british company called System III released a similar game Titled
International Karate. When California based Epyx, Inc., licenced the game and released it as World Karate Championship for the Commodore 64 in April 1986, Data East took Epyx to court, claiming that the "Overall appearance, compilation, and sequence of the audio and the visual display of the video game World Karate Championship infringed upon Karate Champ." Data East also claimed that World Karate Championship infringed upon its trademark and trade dress. The case went before Judge William A. Ingram of the United States District Court for the Northern District of California.
Upon looking at both games, Ingram found several areas of similarity to support Data East's Claim:
A. Each game had fourteen moves.
B. Each game has a two-player option.
C. Each game has A one-player option.
D. Each game has forward and backward somersault moves and about-face moves.
E. Each game has a squatting reverse punch wherein the heel is not on the ground.
F. Each game has a upper-lunge punch.
G. Each game has Back Foot sweep.
H. Each game has A jumping sidekick.
I. Each game has A Low Kick.
J. Each game has a walk-backwards position.
K. Each game has changing background scenes.
L. Each game has 30-second countdown rounds.
M. Each game uses one referee.
N. In each game the referee says, "Begin", "Stop", "White", "Red", Which is depicted by a cartoon-style speech balloon.
O. Each game has a provision for 100 points per remaining second.
World Karate Championship borrowed other elements from Karate Champ. Both games featured fighters in eather Red or White Karate gis, and both featured bonus rounds in which players earned extra points by breaking bricks or dodgeing dangers. The court recognized that both games depicted karate tornaments, some duplication was inevitable. Karate in general, and karate tornaments in particular, included standard features such as karate gis, certain moves, and referees. Matches at karate tornaments involve two fighters earning points for karate maneuvers. The fights are scored by referees who award certian points for various moves. In his decision, Judge Ingram also noted that both games were made for the Commodore computer and that various constraints were inherent in the use of that computer. Even granting these constraints, the judge found too many similarities to ignore.
The district court found that exept for the graphic quality of Epyx's expressions, part of the scoreboard, the referee's physical appearance, and minor particulars in the "bonus phases", Data East's and Epyx's games are qualitatively identical.
Based on these foindings, Judge Ingram ordered Epyx to recall World Karate Championship and
International Karate. His decision was overturned, however, by Judge Stephen S. Trott of the united states Court of Appeals, Ninth Circuit.
To establish copyright infringement, Data East must prove ownership of a valid copyright and "Copying" by Epyx of the copyrighted work. It is undisputed that Data East is the registered copyright owner of the audio-visual work for each version of "Karate Champ". Thus we need only determine weather Epyx copied "Karate Champ". This sounds simple and straightforward. It is not.
According to Trott, there was no direct evidence that System III, the original creator of International Karate, had acess to the Commodore computer version of Karate Champ. He listed Judge Ingrams 15 similarities and identified them as inherent to the sport karate. According to Trott, "Karate is not susceptible of [sic] a wholly fanciful presentation." (In later years, Mortal Combat, Street Fighter II, and other "completely fanciful" martial arts games built off the Karate Champ formula woulde dominate both the home market and the arcade industry.) In his decision, the Judge stated that the only parts of the game that could be protected by a copyright were the areas in which Data East made creative contributions-namely the scoreboard and the background scenes. These, however, were the areas in which Karate Champ and World Karate Championship were most different.
Based apon these two features, a discerning 17.5-year-old boy could not regard the works as substantially similar. Accordingly, Data East's copyright was not infringed on thid basis either.
Trott found in favor of Epyx and reversed Ingram's decision. Epyx was alowed to market World Karate Championship. This decision would have a decisive impact on several future decisions, including another case with Data East. In 1993, Capcom released the game Street Fighter II, which became an international arcade sensation. Shortly after the game was released for home systems, Data East released the fighting game called Fighter's History, which had similar combatants and moves. Capcom took Data East to court, claiming infringement, but the courts ruled in Data East's favor.
So, as you can see, they cant sue unless one trademarked product uses the same "Creative Feature" that the pandora does. Theres not much to put A copy right on really, since Linux is open source and anyone can buy the parts creatue there own pandora. The only thing being copyrighted here is the name Pandora, and any special piece of hardware/software that is original.
And yes, WALL OF TXT.