"It's worth you going home over weekend," U.S. District Judge William Alsup told the jurors, adding that deliberations in the federal court in San Francisco should continue next week.
Oracle sued Google in August 2010, saying Android infringes on its intellectual property rights to the Java programming language. Google says it does not violate Oracle's patents and that Oracle cannot copyright certain parts of Java, an "open-source," or publicly available, software language.
Alsup had been prepared to allow the jury to deliver a partial verdict on Friday. But he changed his mind after one juror said others on the panel thought further deliberations might be useful.
"We should take advantage of that hope," Alsup said.
The trial has been divided into three phases: copyright liability, patent claims, and damages. It began in April and was expected to last at least eight weeks.
If the jury cannot agree on one question, Alsup has indicated he would allow them to deliver a partial verdict and move on to hear evidence in the patent phase of the case. Another jury may then have to resolve the unanswered copyright question on a retrial.
The case in U.S. District Court, Northern District of California, is Oracle America, Inc v. Google Inc, 10-3561.