A California federal judge has approved the Justice Department’s settlement allowing Hewlett Packard Enterprise’s $14 billion acquisition of Juniper Networks to move forward, rejecting objections from a coalition of state attorneys general and closing a closely watched chapter in federal merger enforcement.

The case, United States of America v. Hewlett Packard Enterprise Co. et al, drew unusual attention because the dispute was not just over the substance of the antitrust remedy, but also over whether the court should probe claims that outside lobbying may have influenced the DOJ’s settlement decision.

The FTC has secured what it says is the largest civil penalty ever obtained for a Hart-Scott-Rodino filing failure: a combined $12 million settlement with Edwards Lifesciences and Genesis MedTech over the acquisition of JC Medical. According to the agency, the companies structured the transaction to avoid premerger notification and waiting-period requirements under the HSR Act, prompting an enforcement action filed in the U.S. District Court for the District of Columbia by the DOJ on the FTC’s behalf.

That headline number matters.

The Justice Department’s Antitrust Division has completed its review of Paramount’s proposed acquisition of Warner Bros. and concluded the transaction is not likely to substantially lessen competition. In most deal cycles, that would mark the end of the government review story. Here, it may be the beginning of the litigation story.

According to reports, attorneys general in California, New York, and potentially other states are preparing to challenge the merger anyway.