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That's pretty cool. Is this particular Seagull movement based on the similar ETA? If so, how does copyright work when it comes to producing movements that are identical or nearly-identical to others? If you have any suggested reading on the topic, I'd be interested.
 

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Discussion Starter #5
That's pretty cool. Is this particular Seagull movement based on the similar ETA? If so, how does copyright work when it comes to producing movements that are identical or nearly-identical to others? If you have any suggested reading on the topic, I'd be interested.
You can read the great teardown review of the ST2130/Hangzhou/ETA2824 article on our very own WUS on this thread (sadly the photobucket links appear to be dead):
https://www.watchuseek.com/f100/how-do-seagull-hangzhou-compare-eta-depth-look-216945.html

I don't think watch movement copyright exists in China.
The ST2130 is based on the 2824-2.
https://watchguy.co.uk/comparison-sea-gull-st2130-eta-2824-2-peacock-sl3000/
Slight correction - watch movement copyright doesn't exist anywhere around the world - *puts on lawyer hat* - patents are the IP protection method for these tangible objects and any patents associated with the building of the 2824 expired long long ago (patents usually last 20 years), the 2824 was introduced in 1961. *takes off lawyer hat*

So anyone can build a movement that uses all the bits and pieces of the 2824 - what they can't do is call it an ETA 2824 - that falls under trademark protection. Calling it a Sea-Gull 2824 may still be problematic also (the same reason why Ferrari couldn't call their car the F150 because Ford threw a strop and thought people would confuse an American pickup truck with an Italian racecar :D ) - source: https://www.bbc.com/news/business-12417757
 

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patents are the IP protection method for these tangible objects and any patents associated with the building of the 2824 expired long long ago (patents usually last 20 years), the 2824 was introduced in 1961.
Yup. That's why the Sea-Gull ST2130 is not the only movement based on the ETA 2824-2: so is the Sellita SW200 -- and probably a large number of so-called "in-house" movements from Swiss brands after ETA started cutting them off from buying ETA movements.
 

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