Apple attorneys in the US antitrust case on e-books went on the offensive on Thursday, attacking the credibility of government witnesses and seeking to debunk key elements of the government's case.
Apple attorneys grilled a trio of witnesses from Apple rival Amazon.
Apple attorney Howard Heiss peppered Amazon executives during a series of contentious exchanges with skeptical questions on Amazon statements about its business profile and pointed out inconsistencies between Amazon testimony and documentary evidence.
Amazon is very "metrics-focused," Heiss said to Amazon's vice president for Kindle Russell Grandinetti. He had previously testified that he did not know Amazon's market share of the e-books market.
Heiss then presented a news article quoting another Amazon executive estimating the company's market share at 70-80%.
Amazon is a key witness in the government's case, which maintains that Apple conspired with publishers to orchestrate a transformation of the e-book market in early 2010 that cost consumers hundreds of millions of dollars.