WASHINGTON—The landmark antitrust case against Google hit a milestone this week when the Justice Department’s last scheduled witness concluded his testimony late Tuesday. Here are some key moments so far from the public parts of the nonjury trial, which began Sept. 12 and is estimated to end in late November. 

Before he was Google CEO, Sundar Pichai fretted about the ‘optics’ of its default search-engine agreement with Apple

Years before he became Google’s chief executive, Sundar Pichai raised concerns about the deal at the heart of the case: the company’s contract with Apple that makes Google the default search engine on Apple’s Safari web browser.