He even said he did not recall whether Google had copyrighted the application programming interfaces for Android.
Oracle has sued Google alleging that the search giant's use of the Android mobile operating system violates its patented Java technology. Oracle acquired Java as a result of its purchase of Sun Microsystems which was finalised in January 2010.
According to the Wired account, Judge William Alsup explained to the mainly non-technical jury that at issue were 37 Android APIs, in two of which there were nine lines of code from Java.
In the case of the other 35, Oracle alleges that the overall architecture is the same as in Java.
Oracle sued Google in August 2010. Two court sessions held in September 2011, called in order to try and reach a settlement, did not succeed.
In March this year, the two companies issued a joint statement indicating that while Oracle sought billions in damages, Google did not think it would have to pay more than a fraction of that amount.
The case began in the San Francisco district court on Monday. That day, Oracle presented its opening arguments. On Tuesday, Oracle chief executive Larry Ellison took the stand followed, briefly, by Page. Yesterday, only Page was deposed.