Oracle copied Amazon’s API—was that copyright infringement?

Found on Ars Technica on Sunday, 05 January 2020
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Oracle has accused Google of infringing copyright law by copying the API of the Java programming language.

Oracle’s argument is that this “reimplementation” of the Java API is on par with writing an unauthorized “Harry Potter” novel and thus an infringement of Oracle’s copyrights in the command names and structures of the Java API.

Among the companies offering a copy of Amazon's S3 API is Oracle itself. In order to be compatible with S3, Oracle’s “Amazon S3 Compatibility API” copies numerous elements of Amazon’s API, down to the x-amz tags.

Leave it to Oracle to whine about abuse while doing the same to others.