Litigation as a Takeover Defense Tactic

Target boards and their counsel deploy litigation as a takeover defense by filing injunctions to halt bids, suing for inadequate disclosure, or triggering antitrust reviews. Courts allow such litigation as a takeover defense only when the suit rests on genuine legal merit—not pure delay—and when the board can show it advanced shareholder interests rather than entrenched management.

How Boards Use Litigation as a Defense

When a hostile bidder launches an offer, the target board’s legal team immediately considers filing suit. The most common approaches are:

Injunctive relief: Seeking a temporary restraining order or preliminary injunction to halt the tender offer or merger vote pending litigation on the merits. Courts will grant injunctions only if the plaintiff shows a likelihood of success on the underlying claim and irreparable harm.

Disclosure claims: Suing the bidder or requiring SEC disclosure of inadequate information, arguing shareholders cannot make an informed vote. If a court agrees, the acquisition timeline stretches weeks or months while disclosure is litigated.

Antitrust challenges: Filing a complaint with the Department of Justice, FTC, or state attorneys general, alleging the deal violates antitrust law. A regulatory challenge can derail or delay a transaction for 12+ months.

Breach of fiduciary duty claims: Suing the bidder (if it’s an insider or related entity) or the bidder’s financial advisors for violations of law, misrepresentation, or tortious interference.

Regulatory violations: Asserting the bidder failed to comply with securities law, banking regulations, or foreign investment rules.

The common thread: each suit seeks to impose delay or legal cost, giving the board time to find a white knight, negotiate a superior offer, or let shareholder sentiment shift.

Legal Standards Courts Apply

Delaware courts—which hear most corporate control contests—have developed a robust doctrine around defensive litigation. The leading principle is business judgment deference: if the board acted in good faith and with reasonable inquiry, courts generally defer to the board’s decision to litigate.

However, Delaware and most jurisdictions impose a critical condition: the suit must have genuine legal merit. A purely pretextual lawsuit filed solely to delay a transaction will be dismissed or expedited. Courts ask:

• Is there a colorable legal claim, or is the suit a delay tactic in disguise?
• Did the board follow proper process (e.g., independent committee approval, outside counsel opinion)?
• Is the claimed injury to shareholders real, or is the board primarily protecting itself?

In Crispo v. Akorn, Inc. (2013) and other cases, Delaware courts have awarded costs and sanctions against boards that filed suits lacking serious legal basis. This deters frivolous defensive litigation.

Examples and Case Patterns

Disclosure litigation is the most common. In a 2008 hostile bid, if the target alleges the bidder’s proxy materials omit a material fact, the target can obtain a court order requiring additional disclosure or supplemental statements. This delays the shareholder vote by weeks while the dispute is resolved. Courts honor these suits because shareholder information is a genuine corporate law value.

Antitrust challenges can be lethal. When Microsoft tried to acquire Activision Blizzard in 2022, the FTC sued to block the deal on competition grounds, and Activision joined the defense, arguing the deal posed no antitrust risk. The litigation delayed closing by months and created uncertainty, though ultimately the deal closed. Had the challenge prevailed, the deal would have failed.

Injunctions to halt the tender offer itself are rarer and require a stronger showing. A board must prove the offer violates securities law or state corporate law in a way that harms shareholders. Mere disagreement over price does not justify halting the bidder’s right to make an offer.

In a celebrated 1989 case, Time Inc.’s board sought an injunction against Paramount’s hostile bid, arguing the Time-Warner combination was superior. The Delaware Supreme Court denied the injunction, reasoning that Time shareholders should decide the outcome, not a court-imposed halt. The board’s job was to disclose all relevant facts and let the vote proceed.

Strengths and Limitations

Advantages:

• Litigation can legitimately delay a transaction, buying time for a board to solicit counter-offers or persuade shareholders.
• A genuine legal claim (e.g., the bidder lied in its proxy statement) protects shareholders by forcing disclosure.
• Antitrust or regulatory suits can kill a deal entirely if the legal case is strong.
• Filing suit signals the board will fight, which can deter low-ball bids or opportunistic raiders.

Limitations:

• Courts see through pretextual suits and dismiss them quickly or assess sanctions.
• Extensive litigation raises the bidder’s cost of capital and may cause the bidder to raise its offer to close faster—good for shareholders but limiting the board’s leverage.
• A discovery process in litigation can expose the board’s internal deliberations, sometimes revealing doubts about management’s strategic vision.
• Delays create uncertainty, which can harm the target company’s operations and employee morale.
• The board cannot guarantee it will win the litigation, and a loss damages credibility with shareholders.

The Tension Between Delay and Merit

Courts are highly attuned to the board’s incentive to delay purely for entrenchment. A board facing a $40/share hostile offer backed by solid financing may have shareholders who would accept it, yet still file multiple lawsuits hoping shareholders lose interest or the bidder walks away.

To protect against this, courts scrutinize:

• Board composition: Is the board independent, or are insiders controlling the defense?
• Process: Did the board form a special committee with independent advisors to evaluate the legal merits?
• Timing: Are the suits filed immediately and on solid grounds, or only after other defenses failed?
• Disclosure: Did the board fully inform shareholders about the litigation and its strategy?

If a court senses the board is using litigation to entrench itself rather than serve shareholders, it will dismiss the suit and may accelerate the takeover timeline to punish delay.

Antitrust Litigation as a Structural Defense

Antitrust challenges occupy a special position. An FTC or DOJ action to block a deal is not the board’s suit—it is a government enforcement action. However, the target board can cooperate with regulators, provide evidence of competitive harm, and encourage an antitrust challenge.

This creates a strategic opportunity and a legal risk. If the deal genuinely raises antitrust concerns, the board’s cooperation is legitimate. If the board is primarily trying to block a transaction shareholders would prefer, regulators may see through the maneuver.

The most credible antitrust defenses involve clear, demonstrable competitive overlap or market concentration that a government agency independently believes threatens competition.

See also