(Reuters) — The U.S. Supreme Court on Wednesday considered whether to protect Alphabet Inc.'s Google from a long-running lawsuit by Oracle Corp. accusing it of infringing Oracle copyrights to build the Android operating system that runs most of the world's smartphones.

The shorthanded court, down one justice following the death of Ruth Bader Ginsburg last month, heard oral arguments in Google's appeal of a lower court ruling reviving the lawsuit in which Oracle has sought at least $8 billion in damages. The arguments were conducted by teleconference because of the coronavirus pandemic.

A jury cleared Google in 2016, but the U.S. Court of Appeals for the Federal Circuit overturned that decision in 2018, finding that Google's inclusion of Oracle's software code in Android was not permissible under U.S. copyright law.

Oracle accused Google of copying thousands of lines of computer code from its popular Java programming language without a license in order to make Android, a competing platform that has harmed Oracle's business.

Google lawyer Thomas Goldstein told the court that the disputed Java code should not receive copyright protection because it was the “the only way” to create new programs using the programming language.

“The language only permits us to use those,” Mr. Goldstein said.

But Chief Justice John Roberts grilled Mr. Goldstein about that argument, suggesting Google should still have paid Oracle for a license to Java.

“Cracking the safe may be the only way to get the money that you want but that doesn't mean you can do it,” Justice Roberts said.

Justice Neil Gorsuch questioned Mr. Goldstein on whether Google had simply piggybacked on Oracle's innovation.

He asked, “What do we do about the fact that the other competitors — Apple, Microsoft — have in fact been able to come up with phones that work just fine without engaging in this kind of copying?”

Oracle and Google, two California-based technology giants with combined annual revenues of about $200 billion, have been feuding since Oracle sued for copyright infringement in 2010 in federal court in San Francisco. The case's outcome will help determine the level of copyright protection for software, according to intellectual property lawyers.

Google has said the shortcut commands it copied into Android do not warrant copyright protection because they help developers write programs to work across platforms, a key to software innovation.

Even if the commands can be copyrighted, Google has said, its use of them was permissible under the “fair use” defense to copyright infringement, which can protect copying that transforms an original copyrighted work. Google has argued that its copying was “undoubtedly transformative” because it resulted in “an entirely new smartphone platform.”

The Federal Circuit in 2018 rejected Google's defense, saying “a mere change in format (e.g., from desktop and laptop computers to smartphones and tablets) is insufficient as a matter of law to qualify as a transformative use.”

Oracle will recalculate its damages request if it wins at the Supreme Court and the case is sent back to a lower court, Oracle General Counsel Dorian Daley said in an interview. The compensation request would exceed the roughly $8 billion Oracle previously demanded, he said.

Justice Brett Kavanaugh asked whether a ruling in favor of Oracle would have the dire consequences that Google has predicted. He noted that it has been years since a lower court said Oracle's commands deserved copyright protection.

“I'm not aware that the sky has fallen in the last five or six years with that ruling on the books,” Justice Kavanaugh said.

President Donald Trump's administration backed Oracle in the case, previously urging the justices to turn away Google's appeal.

The Supreme Court originally scheduled the argument for March but postponed it due to the pandemic.

The court has eight justices rather than its full complement of nine. President Trump has asked the U.S. Senate to confirm Amy Coney Barrett, his nominee to replace Ginsburg, by the Nov. 3 U.S. election.