Antitrust Law (JD Academic Unit)

# Antitrust Law Study Notes (JD Academic Unit)


## 1. Sherman Act § 1 — Horizontal Restraints

### 1.1 Per Se Rule vs. Rule of Reason Framework

**Holding:** Per se violations are those that are inherently unlawful—intrinsic evils of restraint of trade—without need to analyze actual market effects. Rule of Reason applies to restraints whose legality depends on specific facts of competition in a particular market.

**Authority:** The distinction originates from *United States v. Standard Oil Co.* and is refined across modern precedent. Courts examine whether a restraint is horizontal (among competitors) and naked (having no integration or efficiency justification).

### 1.2 Price Fixing (Naked Cartels) — Per Se Illegal

**Holding:** Agreements among competitors to fix, maintain, or stabilize prices are per se violations of Sherman Act § 1. No analysis of reasonableness or market effect is required; the agreement itself is illegal once proven.

**Key Facts & Reasoning:** Cartels are judged by their effect on free market pricing. Competitors agreeing on price (whether explicit or through communication channels) removes price competition and harms consumers. This holds regardless of whether the fixed price is "fair" or "reasonable."

**Authority:** *LIGGETT GROUP, INCORPORATED (Brooke Group, Limited) v. BROWN & WILLIAMSON TOBACCO CORPORATION*, **964 F.2d 335** (4th Cir. 1992) — established that predatory pricing claims must meet strict thresholds; demonstrates per se character of price-fixing conspiracies by contrast.

### 1.3 Market/Territorial Division Among Competitors

**Holding:** Horizontal agreements to allocate customers, territories, or products among competitors are per se illegal. Competitors cannot divide a market horizontally.

**Key Distinction:** Vertical territorial or customer restrictions imposed by a supplier on its distributors may be analyzed under the Rule of Reason (post-*Continental T.V., Inc. v. GTE Sylvania Inc.*); horizontal allocation is always per se.

### 1.4 Conscious Parallelism and Tacit Collusion (Plus Factors)

**Holding:** Parallel independent conduct—such as all competitors raising prices simultaneously—is not per se illegal merely because it produces the same effect as a cartel. Proof of conspiracy requires "plus factors" beyond parallelism: e.g., communication, evidence of agreement, a deviation from rational self-interest, or facilitating devices.

**Key Distinction:** Courts distinguish between (1) independent unilateral conduct that happens to parallel competitor behavior, and (2) concerted action evidenced by parallel conduct plus circumstantial evidence of a "meeting of the minds."

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## 2. Sherman Act § 1 — Vertical Restraints

### 2.1 Resale Price Maintenance (RPM) — Leegin Rule of Reason Post-2007

**Holding:** Resale price maintenance (a manufacturer setting minimum or fixed prices at which distributors must resell) is analyzed under the Rule of Reason, not per se. The supplier's vertical relationship with distributors is distinct from horizontal competition.

**Rationale:** Vertical restraints may promote efficiency (ensuring adequate retailer margins, preventing free-riding, maintaining brand quality). RPM does not necessarily harm competition; market structure, the supplier's market power, and interbrand competition are relevant.

**Key Benefit:** This rule of reason approach allows pro-competitive justifications for RPM arrangements that serve efficiency or interbrand competition.

### 2.2 Territorial and Customer Restrictions

**Holding:** Vertical territorial and customer restrictions are analyzed under the Rule of Reason. A supplier may restrict where and to whom a distributor can resell, even if such restrictions limit intrabrand competition, because they may promote interbrand competition or distributor efficiency.

**Authority:** *Continental T.V., Inc. v. GTE Sylvania Inc.*, **425 U.S. 36** (1977) — landmark case shifting vertical territorial restrictions from per se to rule of reason, recognizing pro-competitive benefits of supplier-imposed location restrictions.

### 2.3 Exclusive Dealing Agreements

**Holding:** Exclusive dealing (a buyer agrees to purchase exclusively from one supplier or a supplier agrees to sell only through one distributor) is analyzed under Rule of Reason. The court examines whether the agreement forecloses a substantial percentage of the relevant market to competitors.

**Foreclosure Test:** If exclusive dealing forecloses less than the market share threshold (typically 30–40%), it is unlikely to substantially foreclose competitors and satisfy antitrust concern.

### 2.4 Tying Arrangements — Per Se vs. Rule of Reason

**Holding:** A tie-in (requiring purchase of a tied product as a condition of obtaining a tethered product) may be per se illegal if the seller has market power in the tying product, but modern courts increasingly apply rule of reason analysis, examining actual foreclosure effects and pro-competitive justifications.

**Elements (when per se applies):** Seller has power to force sales of tied product; forced tying; substantial effect on tied product market; and the practice has no pro-competitive justification.

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## 3. Sherman Act § 2 — Monopolization

### 3.1 Elements: Monopoly Power + Willful Acquisition/Maintenance

**Holding:** To establish monopolization under Sherman Act § 2, a plaintiff must prove: (1) the defendant possesses monopoly power in a relevant market, and (2) the defendant willfully acquired or maintained that power through exclusionary (not merely superior) conduct.

**Monopoly Power:** The power to control prices or exclude competition in a relevant market, typically inferred from market share (generally >70% raises presumption, though context matters).

**Willful Acquisition/Maintenance:** Applies to conduct that excludes competitors through predatory, deceptive, or exclusionary means—not conduct attributable to superior product, business skill, or foresight.

### 3.2 Predatory Pricing (Brooke Group Test)

**Holding:** Pricing below cost may be predatory (monopolization) if: (1) the price is below the defendant's average variable cost (or average total cost under some formulations), and (2) the defendant has a reasonable prospect of recouping losses through subsequent monopoly suprapricing.

**Recoupment Requirement:** Predatory pricing claims fail if the defendant's low prices cannot be recouped through supra-competitive pricing later; this prevents antitrust liability for pricing that, even if temporarily below cost, cannot sustain monopoly.

**Authority:** *LIGGETT GROUP (Brooke Group, Limited) v. BROWN & WILLIAMSON TOBACCO CORPORATION*, **964 F.2d 335** (4th Cir. 1992); affirmed **509 U.S. 209** (1993) — established that predatory pricing requires proof of cost (usually AVC) and recoupment likelihood.

### 3.3 Refusal to Deal Doctrine (Aspen Skiing / Trinko Limits)

**Holding:** A monopolist's refusal to deal with a competitor may violate Sherman Act § 2 if the monopolist previously dealt with the competitor (established course of dealing), has no legitimate business justification, and the refusal is motivated by anticompetitive intent.

**Aspen Skiing Precedent:** *Aspen Skiing Co. v. Aspen Highlands Skiing Corp.*, **738 F.2d 1509** (10th Cir. 1984) — ski company's refusal to include competitor in joint ticket package, despite prior cooperation, was exclusionary conduct supporting monopolization claim. The abrupt cessation of a prior relationship was a "plus factor" evidencing willfulness.

**Trinko Limits:** *Verizon Communications Inc. v. Law Offices of Curtis V. Trinko, LLP* (2004) — refusal to deal doctrine narrowed. Monopolist has general right to refuse to deal; only established course of dealing + anticompetitive animus + no legitimate justification triggers liability.

**Application:** A firm cannot be forced to deal with competitors merely because it has power, but if it has a pattern of dealing and suddenly refuses a competitor without business justification, antitrust liability may attach.

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## 4. Clayton Act § 7 — Mergers

### 4.1 Horizontal Mergers: HHI Thresholds and 2023 Merger Guidelines

**Holding:** Horizontal mergers (competitors combining) are evaluated using the Herfindahl-Hirschman Index (HHI):
- **HHI < 1500:** Merger presumed not to harm competition.
- **HHI 1500–2500:** Merger reviewed for competitive effects; increased delta-HHI scrutinized.
- **HHI > 2500:** Highly concentrated market; merger presumptively illegal if delta-HHI > 100–200 (varies by recent guidelines).

**2023 Guidelines Update:** The Biden-era DOJ/FTC merger guidelines (2023) lower thresholds and increase scrutiny for: (1) vertical mergers with foreclosure risk, (2) conglomerate mergers with leveraging potential, and (3) serial mergers signaling strategic rollup behavior.

**Competitive Effects Analyzed:**
- Unilateral effects (post-merger price increases by merged entity)
- Coordinated effects (merger facilitates price coordination among remaining competitors)
- Removal of a maverick competitor

### 4.2 Vertical Mergers: Foreclosure Theory and Efficiencies

**Holding:** A vertical merger (supplier merging with customer) is analyzed for:
- **Input Foreclosure:** Merged firm raises input costs to rival downstream competitors.
- **Customer Foreclosure:** Merged firm denies output to rival upstream suppliers.

**Efficiencies Defense:** Vertical merger may be procompetitive if it lowers transaction costs, improves quality, or reduces double marginalization.

**Analysis:** Modern courts require proof that foreclosure is probable (not speculative) and substantial; pro-competitive efficiencies must be merger-specific and not available through less restrictive means.

### 4.3 Merger Defenses: Efficiencies and Failing Firm

**Efficiencies Defense:** Merger is procompetitive if cognizable efficiencies (cost reductions, quality improvements) outweigh anticompetitive effects. Efficiencies must be:
- Verifiable
- Likely to be realized (not speculative)
- Not achievable through less restrictive means
- Sufficient to offset anticompetitive harms

**Failing Firm Defense:** If one merging party is failing (unable to continue as a going concern), the merger may be permitted even if anticompetitive, because the alternative is exit (which harms competition more).

**Burden:** Merging parties bear burden of proving efficiencies; government must prove anticompetitive effects.

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## 5. FTC Act § 5 & Enforcement

### 5.1 FTC Unfair Methods of Competition — Standalone § 5 Authority

**Holding:** Section 5 of the FTC Act prohibits "unfair methods of competition." This authority was narrowed in *AMG Capital* (FTC must show Sherman Act § 1 or § 2 violation or identify unfair practice with different standards) but has been revived by the Biden-era FTC asserting standalone § 5 authority over practices not proven to violate Sherman/Clayton Acts.

**Current Status:** The FTC is using § 5 to challenge: multi-sided platform practices, exclusivity terms, non-compete agreements, and other conduct not per se illegal but claimed to be "unfair" to competition.

### 5.2 Private Enforcement: Treble Damages, Standing, Passing-On

**Treble Damages:** Private plaintiffs who prove antitrust violation recover three times actual damages (treble damages) plus attorney fees, providing strong incentive for private litigation.

**Standing & Injury:** Plaintiff must show antitrust injury (harm flowing from violation and of the type the antitrust laws were designed to prevent). **Illinois Brick Doctrine:** Direct purchasers can sue; indirect purchasers generally cannot recover passed-on overcharges (but some states have parens patriae actions).

**Passing-On Defense:** Defendant can argue plaintiff recouped overcharges by passing them to downstream customers.

### 5.3 DOJ Criminal Enforcement (Per Se Cartel)

**Holding:** Per se violations—especially cartels (price-fixing, bid-rigging, market allocation)—are subject to criminal prosecution. Criminal penalties include imprisonment (up to 10 years per individual) and fines (corporate fines can exceed $100 million).

**Automatic Agencies:** Antitrust Division prioritizes cartel prosecutions. "No snitching" policy: first firm to self-report and cooperate receives leniency (criminal amnesty if no prior conviction).

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## 6. Market Definition

### 6.1 SSNIP Test (Small but Significant Non-transitory Increase in Price)

**Holding:** Relevant market is defined as the product set and geographic area where a hypothetical monopolist could impose a Small but Significant Non-transitory Increase in Price (SSNIP—typically 5%) without losing sales to outside alternatives.

**Procedure:** Start with candidate market (e.g., "tablet computers"). Test: If tablets raise price 5%, would consumers switch to notebooks? If yes, notebooks are in same market. Repeat until a product group tolerates a 5% SSNIP.

**Application:** Courts use SSNIP to define both relevant product market and relevant geographic market.

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## Key Takeaways

1. **Per Se vs. Rule of Reason:** Horizontal naked restraints (price-fixing, allocation) are per se; vertical restraints and most monopolization conduct use rule of reason.

2. **Merger Enforcement is Aggressive:** 2023 Guidelines lower HHI thresholds; all mergers > $111M get HSR review.

3. **Refusal to Deal:** Limited doctrine. Requires established course of dealing, lack of business justification, and anticompetitive motive.

4. **Predatory Pricing:** Hard to prove; requires showing cost below AVC and recoupment capability.

5. **Market Definition is Foundational:** All antitrust analysis starts with defining relevant market (product + geography) using SSNIP.

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**Real Cases Cited:**
- *Aspen Skiing Co. v. Aspen Highlands Skiing Corp.*, 738 F.2d 1509 (10th Cir. 1984)
- *Brooke Group Ltd. v. Brown & Williamson Tobacco Corp.*, 964 F.2d 335 (4th Cir. 1992); 509 U.S. 209 (1993)
- *Continental T.V., Inc. v. GTE Sylvania Inc.*, 425 U.S. 36 (1977)