Sham Litigation Doctrine

The Noerr-Pennington doctrine is a judicially created antitrust doctrine that shields petitioning the government — including filing lawsuits — from antitrust liability: ORIGIN: Eastern Railroad Presidents Conference v. Noerr Motor Freight (S.Ct. 1961) and United Mine Workers v. Pennington (S.Ct. 1965) established that concerted efforts to influence legislation or law enforcement are immune from antitrust liability even if the purpose is to destroy competition; APPLICATION TO PATENT ENFORCEMENT: filing a patent infringement lawsuit is a form of petitioning the court — it is a request for the government to vindicate a legal right; under Noerr-Pennington, this petitioning activity is protected from antitrust liability even if the patent lawsuit restrains competition; WHY THIS MATTERS: patent enforcement inherently restricts competition — that is the point of patents; a patentee who sues a competitor for infringement may cause the competitor's product to be pulled from the market; without Noerr-Pennington, every successful patent enforcement action would expose the patent holder to antitrust counterclaims; THE CONSTITUTIONAL FOUNDATION: Noerr-Pennington is grounded in First Amendment rights (the right to petition the government for redress of grievances); courts have extended this protection to court filings as a form of petitioning; SCOPE OF PROTECTION: Noerr-Pennington protects the ACT OF FILING SUIT as well as: pre-suit demand letters; licensing negotiations backed by litigation threats; PTAB proceedings and other administrative proceedings related to patent enforcement; LIMITATIONS: Noerr-Pennington does NOT protect: sham litigation (objectively baseless filings); fraud on the courts; Walker Process antitrust claims based on fraudulent patent procurement; PRACTICAL IMPACT: because of Noerr-Pennington, a defendant in a patent lawsuit generally cannot file antitrust counterclaims based solely on the fact that the plaintiff filed the lawsuit; the defendant must show that the lawsuit is a sham or that the patent was obtained through fraud.

Professional Real Estate Investors v. Columbia Pictures Industries (S.Ct. 1993) established the two-part test for determining whether litigation is a sham that loses Noerr-Pennington protection: THE TWO-PART TEST: (1) OBJECTIVE BASELESSNESS: the lawsuit must be objectively baseless in the sense that no reasonable litigant could realistically expect to succeed on the merits; if the claim has any basis in fact and law, it is not objectively baseless even if it ultimately loses; (2) SUBJECTIVE INTENT: if and only if the first (objective) prong is met, the second prong asks: was the litigation an attempt to interfere directly with the business relationships of a competitor through the use of the governmental process (as opposed to the outcome of that process); BOTH PRONGS MUST BE SATISFIED: a lawsuit that is objectively baseless but brought in good faith (no intent to harm through process rather than outcome) is not sham litigation; a lawsuit that is brought with bad intent but has some objective merit is not sham litigation; THE CRITICAL DISTINCTION — OUTCOME vs. PROCESS: legitimate litigation uses the government process to obtain an OUTCOME (a judgment); sham litigation uses the government PROCESS itself (discovery burdens, litigation costs, delays to competitive entry) as a competitive weapon — the outcome is irrelevant to the defendant's purpose; OBJECTIVE BASELESSNESS STANDARD: whether a lawsuit is objectively baseless is judged at the time of filing, not with hindsight; a claim that seemed reasonable when filed but ultimately fails is not objectively baseless; the test is whether a reasonable party could have believed the claim had a chance of success; SUBJECTIVE INTENT EVIDENCE: courts look at communications among competitors; admissions by executives; timing of lawsuits in relation to competitive events; pattern of filing multiple weak claims against competitors; repeated threats with no follow-through; high volume of patent assertions against small defendants who lack resources to defend; SERIES OF SHAM ACTIONS: a PATTERN of objectively baseless filings can constitute sham litigation even if each individual filing has some marginal merit (California Motor Transport v. Trucking Unlimited, S.Ct. 1972); APPLICATION IN PATENT CONTEXT: a patent holder who files infringement suits knowing the patents are invalid (but concealing this knowledge) may face sham litigation claims; a patent holder who files suits based on a deliberately unreasonable claim construction position may face sham claims.

Walker Process is an independent antitrust theory based on patent procurement fraud that differs from sham litigation doctrine: ORIGIN: Walker Process Equipment, Inc. v. Food Machinery Corp. (S.Ct. 1965) — the Supreme Court held that a patent holder who obtained a patent through fraud on the USPTO and then attempted to enforce that patent might be liable for attempted monopolization under § 2 of the Sherman Act; THE WALKER PROCESS ELEMENTS: (1) FRAUDULENT PROCUREMENT: the patent must have been obtained through intentional, material misrepresentation to the USPTO; (2) ATTEMPTED MONOPOLIZATION: the patent holder must have attempted to enforce the fraudulently obtained patent; (3) MARKET POWER: the relevant market must be properly defined and the patent holder must have had (or be attempting to acquire) monopoly power in that market; THE FRAUD ON THE USPTO ELEMENT: Walker Process requires the kind of misrepresentation that would constitute inequitable conduct — intentional material misrepresentation; but the standard in Walker Process antitrust cases may be even higher than in inequitable conduct cases; examples of qualifying fraud: knowingly submitting false prior art declarations; deliberately misrepresenting the prior art during prosecution; concealing known material prior art; using a false oath (e.g., falsely claiming not to know of material prior art when in fact you were aware of it); HOW WALKER PROCESS DIFFERS FROM SHAM LITIGATION: SHAM LITIGATION: focuses on the ACT OF FILING SUIT; the patent may be valid and enforceable; the problem is that the litigation itself is objectively baseless or used as a weapon; WALKER PROCESS: focuses on the PROCUREMENT OF THE PATENT; the patent itself was obtained through fraud; the enforcement — even if the litigation is conducted in good faith — is tainted by the underlying fraud; a plaintiff can bring BOTH Walker Process fraud and sham litigation claims in the same case if both apply; STANDING: only a competitor who suffered antitrust injury from the enforcement of the fraudulently obtained patent has standing to bring Walker Process claims; PRACTICAL USE IN LITIGATION: Walker Process claims are difficult to prove because the fraud element requires showing intentional conduct during USPTO prosecution, which happened years before the litigation; typically requires review of the entire prosecution history plus inventor/attorney depositions; practitioners file Walker Process counterclaims alongside invalidity defenses based on inequitable conduct.

The Handgards doctrine extends antitrust liability to patent enforcement where the patent holder knows the patent is invalid or unenforceable: ORIGIN: Handgards, Inc. v. Ethicon, Inc. (9th Cir. 1979) — held that a patent holder who KNOWS its patent is invalid or unenforceable cannot enforce the patent without antitrust liability; the act of filing and maintaining a lawsuit based on a patent the holder knows is invalid may constitute an attempt to monopolize; THE HANDGARDS PRINCIPLE: a patent gives its holder a lawful monopoly — but only if the patent is valid; if the holder KNOWS the patent is invalid and enforces it anyway, the monopoly power derived from that enforcement is unlawful; this is distinct from sham litigation (which is about objective baselessness and subjective intent to use process as a weapon) and Walker Process (which is about fraud in procurement); KNOWLEDGE REQUIREMENT: Handgards requires that the patent holder have ACTUAL KNOWLEDGE that the patent is invalid or unenforceable; it is not sufficient to show the patent was ULTIMATELY found invalid — the holder must have known it was invalid at the time of enforcement; EVIDENCE OF KNOWLEDGE: internal documents showing the holder was aware of invalidating prior art; communications from inventors or counsel identifying that the patent claims were overly broad; prior licensing negotiations where the holder accepted reduced royalties with the knowledge that validity was doubtful; PUBLIC ADMISSION: if the patent holder publicly stated the patent was questionable and then sued anyway, this could support a Handgards claim; THE DIFFICULTY OF PROVING HANDGARDS: actual knowledge of invalidity is difficult to prove; the patent holder can argue it merely believed the patent was valid and had a colorable defense; Handgards claims are most successful when combined with Walker Process (where fraud in procurement establishes the holder's knowledge) or where internal documents unambiguously show awareness of validity problems; DEFENSE INTERACTION WITH INEQUITABLE CONDUCT: a patent found unenforceable for inequitable conduct was obtained through fraud or deception; if the patent holder KNEW about the inequitable conduct at the time of enforcement, this could support both Handgards liability and Walker Process liability.