Google loses bid to end US antitrust case over digital advertising

U.S. District Judge Leonie Brinkema decided to deny Google's motion to end the antitrust case without a trial because she determined that there was a factual dispute that needed to be resolved through a trial. Google had argued for a win without a trial, stating that antitrust laws do not block companies from refusing to deal with rivals and that regulators had not accurately defined the ad tech market. However, Judge Brinkema found that there was enough evidence and disagreement between the parties to warrant a trial. As a result, the trial is scheduled to take place on September 9, with Judge Brinkema presiding over the case.

The reason for blocking a former FBI agent, who was acting as a cybersecurity consultant for Google, from testifying as an expert at the trial has not been explicitly mentioned in the provided text. However, it can be inferred that the decision was made by U.S. District Judge Leonie Brinkema, who seemed to side with the regulators in this instance. It's possible that the judge determined the former FBI agent's testimony might not be relevant or material to the case, or perhaps there were concerns about potential biases or conflicts of interest. More specific details about the reasoning behind this decision would require further information.