Oracle is claiming billions of dollars in damages in a lawsuit filed against Google for allegedly using software in the Android platform that infringes Oracle's Java patents.
The size of the lawsuit was reportedly revealed in an Oracle filing on Thursday that successfully prevented Google from submitting its own documents "under seal", or in private.
US district judge William Alsup, who is presiding in the case, has now ordered Google to file its précis documents in public.
"Oracle's damage claims are based on accepted methodology and a wealth of concrete evidence," Oracle reportedly said in the filing. "They should not be hidden from public view."
However, Google has hit back, claiming that Oracle's calculations for the royalty the web giant owes due to its use of Java patents is unfairly high.
"Oracle's 'methodology' for calculating damages is based on fundamental legal errors and improperly inflates their estimates," a spokesperson told V3.co.uk.
The two tech giants have already met in court. Oracle filed the original suit in August 2010 claiming that Google "knowingly, directly and repeatedly infringed Oracle's Java-related intellectual property" and seeking "appropriate remedies".
The key technology in question is the Dalvik virtual machine used in Android.
Oracle's cause seemed to have received a boost earlier this year when patent expert Florian Müller, founder of the No Software Patents organisation, claimed to have found "the same pattern of direct copying" in Google's Java code as those already presented by Oracle in its lawsuit.
In an updated blog post on Thursday, Müller welcomed Oracle's efforts to prevent Google from filing and in so doing hide some of the key details of the case from public view.
"Oracle demonstrates a whole lot of confidence by advocating transparency and openly stating that this is about 'billions of dollars'," he said.
"Google apparently doesn't want that information to be debated publicly. They probably fear that this could have the Android ecosystem concerned. They may also fear that this could influence the future jury before this case goes to trial."
However, Ovum chief analyst Carter Lush argued that the lawsuit is unlikely to have any lasting knock-on effects on the Android platform.
"Enterprise and public-sector IT executives should not lose sleep over yet another patent lawsuit. These are chess games played by vendors that typically end up with settlements than include patent cross-licensing," he told V3.co.uk.
"As a consequence, neither vendor's ability to conduct business or innovate is affected. There are many more market and business disruptors that IT needs to worry about, and this is not one of them."
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