According to your account, it mainly involves copyright issues. Works in the sense of copyright must be original, while works in the public domain cannot be the object of copyright protection. If it is improved on the basis of works in the public domain, it can enjoy copyright. So your question depends on whether the Mohr pattern appears in the public domain, what kind of pattern it is, and whether these patterns have entered the public domain. The so-called public domain refers to works that have passed the copyright protection period and can be used by the public at will without the consent of the author. For example, you can suggest that moire patterns have existed since ancient times, so patterns should be public domain works, and everyone just improves them on this basis, but the most basic moire patterns should not be exclusive to anyone.
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