A federal judge in Manhattan has cleared the way for publishers to put Google’s ad auction mechanics in front of a jury. On September 30, Judge P. Kevin Castel denied most of Google’s summary judgment motions in case 21-md-3010, the multidistrict proceeding consolidating private damages claims over Google’s advertising stack.
The result is no longer a vague theory of harm. It is a set of named programs, approved damages figures and expert economists who will testify.
The claims that survived
- Daily Mail publishers may present $599.96 million in damages.
- Gannett, trading as USA TODAY Co., may present $900.77 million.
- An AdX publisher class advances with a $1.72 billion overcharge claim, built on a model by Einer Elhauge calculated through March 2024.
Expert economists Ali Hortacsu of the University of Chicago and Shengwu Li of Harvard were both permitted to testify. That matters because expert exclusion is how cases of this shape often die.
The auction mechanics in question
Enhanced Dynamic Allocation, running since 2014, let Google’s exchange reach impressions publishers had reserved for direct deals. Internal Google correspondence quoted in the ruling said that with EDA on, the reserve price was set at $1, letting any AdX buyer including GDN win. Hortacsu calculated that EDA alone cost Gannett $348.9 million domestically.
Project Bernanke, and its successor Global Bernanke, date from 2013. A February 2017 email said the company was implementing a bidding ring the FTC had declared illegal. A memo put the effect in numbers: AdX win rates rose from 37% to 44%, generating $290 million in additional revenue.
Minimum Bid to Win, live since 2019, gave AdX bidders the lowest winning bid after each auction. Project Poirot adjusted demand-side platform bids inside DV360 to cut rival exchange spending by 14.7% while raising AdX spending by 7.5%.
What Google still won
The court did not let everything through. New York consumer protection claims were dismissed against both Gannett and Daily Mail because the arrangements were too complex for a statute written for consumers. Inform Inc. lost its federal antitrust claims and a $479 million damages demand. The Progressive lost its AdSense claims for lack of sufficient connection to the product.
Google’s mitigation defence partly survived too. Publishers argued they could not realistically walk away from AdX, which accounted for 80% to 90% of their inventory. A jury may now weigh whether price floors or other settings could have reduced the exposure.
Why this matters now
The ruling is not just about three publishers. At least twelve other companies have filed follow-on suits citing the same practices, including Raptive, Teads, OpenX and Dotdash Meredith. Findings from the Virginia liability case of April 17, 2025 were given preclusive effect in New York, so this fight is about money rather than market definition. Daily Mail’s claimed damages also include more than $380 million in foreign revenue, which the court held recoverable.
For marketers and publishers, the practical lesson is clear: auction mechanics are pricing power. Review your ad server floor settings, watch win-rate anomalies, and treat programmatic vendors as commercial counterparties, not neutral pipes.
Source: PPC Land
