My recollection was that the judge in this case pursued a very clever strategy. There were two questions to be decided: are APIs copyrightable and did Google infringe. The jury were asked to assume the API was copyrighted and then decide whether Google infringed that copyright. The jury found no infringement. Then the judge ruled that APIs were not copyrightable.

So even if the judge's decision is overturned the jury's decision still stands and there was no infringement.