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Department of Justice (DOJ) Hart-Scott-Rodino Act State Attorneys General

Vinson & Elkins LLP

“Mini-HSR Acts” Multiply in the States; Merger Enforcement Developments in Washington, Colorado and More

Vinson & Elkins LLP on

Parties to transactions should be aware of new requirements for state-level merger reporting – so-called “mini-HSR Acts” – modeled on the Uniform Antitrust Pre-Merger Notification Act (“UAPNA”). Washington and Colorado have...more

Fenwick & West LLP

Washington Becomes First State to Enact ‘Mini HSR’ Notification Requirement

Fenwick & West LLP on

As of July 27, 2025, federal Hart-Scott-Rodino (HSR) Act filings will also need to be submitted to the Washington Attorney General (WA OAG) under Washington State’s Antitrust Premerger Notification Act (APNA) if the parties...more

McGuireWoods LLP

Washington, Colorado First States to Enact Uniform Antitrust Pre-Merger Notification Act

McGuireWoods LLP on

Washington and Colorado are the first two states to pass laws requiring certain parties to affirmatively submit their Hart-Scott-Rodino (HSR) filings to their states’ attorneys general. Both states passed laws modeled on the...more

Frost Brown Todd

Antitrust Developments Update for April 2025

Frost Brown Todd on

In our last antitrust developments publication, we commented on the challenge to the new Hart-Scott-Rodino Antitrust Improvements Act (HSR Act) final rule brought by the U.S. Chamber of Commerce and other parties in the...more

Latham & Watkins LLP

Washington Introduces State-Level Merger Notification Rules

Latham & Watkins LLP on

States’ merger review and enforcement initiatives continue to expand as Washington adopts the nation’s first “mini-HSR” rule. On April 4, 2025, the State of Washington passed the Antitrust Premerger Notification Act...more

Bass, Berry & Sims PLC

Washington Enacts “Mini-HSR” Law, Expanding State-Level Premerger Filing Requirements

Bass, Berry & Sims PLC on

On April 4, Washington became the first state to adopt the Uniform Premerger Notification Act (Act) when Washington Governor Jay Inslee signed the bill into law. The new statute imposes state-level premerger filing...more

Axinn, Veltrop & Harkrider LLP

Axinn Associates at the Antitrust Spring Meeting - Antitrust under Trump: Redo of the first term, or something new?

The Spring Meeting is the largest gathering of competition, consumer protection, and data privacy profes­sionals globally, with lawyers, academics, economists, enforcers, journalists, and students from around the world....more

Goodwin

States Continue to Pursue and Expand Healthcare Market Oversight at an Unprecedented Pace, with Significant Implications for...

Goodwin on

In recent years, states have shown an increased interest in regulating healthcare markets. The trend has accelerated further since the start of 2025, with a flurry of proposals in at least 12 states. ...more

Sheppard Mullin Richter & Hampton LLP

Navigating the Matrix of State Healthcare Approvals

The outlook for federal antitrust enforcement remains murky, at best, with uncertainty about whether the new federal HSR rules, merger guidelines, and existing enforcement actions. The forecast for state antitrust...more

BakerHostetler

Trump 2.0 - What To Expect In Antitrust Enforcement

BakerHostetler on

In his return to the White House, President-elect Trump inherits an aggressive antitrust enforcement regime from the Biden administration – an enforcement regime that was born and developed in many respects during Trump’s...more

Cozen O'Connor

State AGs and DOJ Sick Over Planned Health Care Merger

Cozen O'Connor on

The Maryland, Illinois, New Jersey, and New York AGs and the U.S. DOJ have sued to block the acquisition of Amedisys, Inc. by UnitedHealth Group Incorporated (“UnitedHealth”), alleging that it would violate Section 7 of the...more

McDermott Will & Schulte

States Want in on the Merger Review Fun

While they have long taken a back seat to federal merger reviews, US states are becoming increasingly involved in merger reviews, including potentially requiring premerger notifications on a broad scale. On July 24, 2024, the...more

Stevens & Lee

Louisiana’s COPA Exempts Hospital Acquisitions from Federal Antitrust Laws

Stevens & Lee on

As explained in prior posts, the Federal Trade Commission (“FTC”) filed suit in April of this year in Federal District Court for the District of Columbia seeking to enjoin Louisiana Children’s Medical Center (“LCMC”) from...more

Cozen O'Connor

NAAG Hosts Antitrust Bootcamp: State/Federal Cooperation Is Key

Cozen O'Connor on

The National Association of Attorneys General (NAAG)’s Eastern Region Meeting, held August 1-3, 2023 in Connecticut in conjunction with the Attorney General Alliance, included an “Antitrust Bootcamp” that surveyed the history...more

Morrison & Foerster LLP

Congress Increases Merger Filing Fees for Large Deals and Makes Other Significant Changes

Congress passed the Consolidated Appropriations Act of 2023 (the “Act”) on December 22, 2022, and President Biden signed it into law on December 29, 2022. The Act significantly amends the Hart-Scott-Rodino Act (the “HSR Act”)...more

Cozen O'Connor

State AGs Seek Federal Funding For Antitrust Enforcement

Cozen O'Connor on

The National Association of Attorneys General (“NAAG”) sent a letter to Congress signed by a bipartisan group of 45 AGs calling on legislators to provide funding to support state antitrust enforcement efforts...more

Orrick - Antitrust Watch

State Attorneys General Ramping up Merger Enforcement

Last month, Colorado Governor Jared Polis signed a law repealing a provision of the Colorado Antitrust Act that prohibited challenging a merger under state law where the federal antitrust agencies did not also challenge the...more

Wilson Sonsini Goodrich & Rosati

2019 Antitrust Year in Review

Wilson Sonsini Goodrich & Rosati (Wilson Sonsini) is pleased to present its 2019 Antitrust Year in Review, which summarizes the most significant antitrust matters and developments of the past year. Over the past few years,...more

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