The ancient Romans copied the ancient Greeks. The Renaissance It alians copied the ancient Romans. The British & French copied and re-interpreted the Italians. Renaissan ce Italian architect Palladio was one of the most copied architects in Great Britain. Thomas Jefferson's famous home 'Monticello' was directly copied from a Palladian design.

Ameri can mid-century modernist architects were heavily influenced by German architects. German modernism (Bauhaus)was directly copied from the Soviet Russian Constructivist  architectural movement. 

I deas circulate and are re-interpreted throughout history. 

Fr ank Lloyd Wright re-interpreted (copied) the  minimalism and clean horizontal lines of Japanese architecture that fit into the landscape totally unlike the obnoxious Victorian mansions of his day.The BIG difference between Frank Lloyd Wright & Zaha Hadid is that F.L.W. engineered all his buildings and designed every last structural detail. Zaha Hadid is purely conceptual & does none of her own engineering. 

Many Western architects simply provide concepts to the Chinese and allow the Chinese to totally engineer the projects. As a result, the Chinese are in possession of all the working drawings required to construct these buildings. To me this is unclear whose intellectual property this is although one could make a case that the Chinese do all the work necessary to make these buildings viable..

And just to emphasize my point. While two square buildings are not necessaily the same, in this case the Chinese have clearly copied Zaha Hadid. Just like they did with the Apple store.

Zaha Hadid Ripped Off the same design from londons gerkin building (unregistered) wrote in #10
like most corrupt people she accuses others of her own guilt. She only became famous after a massive bbc publicity campaign. She has very little experience in architecture before she was hyped by marketing experts. -------- -------------------- -------------------- -------------------
The gherkin is composed of a triangulated structure and curtain wall skin. It's proportions are situated vertically. In case you don't know how to count, also, the gherkin is one skyscraper. 
Zah a's buildings are oriented horizontally and vertically both in proportion and circulation. The structural system is primarily concrete. The complex of buildings also connect via skywalks and utilize parametrics to smooth surfaces and connections. She was the first to attempt such things computationally (Saarinen did it by hand). You might also be familiar with Jean Nouvel's tower in Spain, which really is more similar to the Gherkin.  You might also know that Zaha's work is very different from and edgier than Foster, just look at the Phaeno, vitra, et al. If two buildings are square they are not necessarily the same thing.
BTW Ottoman, the chinese did not invent pizza, they made green onion pancakes which were like sandwiches. Marco Polo could have thought of pizza without the chinese. The pizza he invented was very different from what the chinese made.