Well it's worth reading the linked wiki article section, which includes a link to another article "Copyright law of the Soviet Union", flatly contradicting you unless you maintain that the USSR wasn't truly communist.

> unless you maintain that the USSR wasn't truly communist.

Didn’t they themselves say they were a socialist society on the path to communism?

Does anyone think the USSR was communist?

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The USSR was a socialist state, which is different.

And non-democratic.