SAN FRANCISCO—An economist hired by Oracle was sworn in and took the stand in federal court today, opining that Google’s use of Java APIs in Android shouldn’t be considered “fair use.”
The testimony by Adam Jaffe wrapped up day eight of the Oracle v. Google trial, a legal dispute that began in 2010 when Oracle sued Google’s use of the 37 Java APIs, which Oracle acquired when it bought Sun Microsystems. In 2012, a judge ruled that APIs can’t be copyrighted at all, but an appeals court disagreed. Now Oracle may seek up to $9 billion in damages.
If Google hadn’t copied the 37 Java APIs in question, Android “very likely would not have been as successful,” Jaffe opined. He also believed that Java was “poised to enjoy continued success” in the mobile space, a point also made earlier today by former Sun licensing executives.
Google came in at the right time, and it was able to take advantage of “network effects” that pushed Sun out of the market, Jaffe told the jury.
“If you come late, you’re playing catch-up,” he said. “It’s hard to convince people your network is going to be big enough to be worth joining.”
In 2005, Java was doing great and was installed on about 1 billion handsets, he noted.
Once Android came out, the “window of opportunity” began to close, he said. A slide was displayed to a jury showing a literal window, being pushed down by various factors, labeled “Platform economics,” “Mobile Use Rising,” and “iPhone launch.”
Jaffe’s slide showed that Android-related revenue was $16.8 million in 2009, $600 million by 2011, and reached a whopping $13 billion by 2014. That’s mostly ad revenue, with a significant minority share coming from app sales, and small slices of revenue from hardware and digital content.

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