Introduction
Patent assertion entities (PAEs)—also referred to as non-practicing entities (NPEs)—acquire patent portfolios not for the purpose of commercializing the underlying technology but to generate licensing revenue through the assertion of infringement claims against operating companies. The volume of patent infringement suits filed by PAEs has grown substantially over the past two decades, with technology companies representing a disproportionate share of defendants. These actions frequently target widely adopted technologies and industry standards, placing defendants in the position of either negotiating license agreements or mounting resource-intensive litigation defenses that may span multiple jurisdictions and years of proceedings.
The defense of technology companies against PAE-initiated claims presents distinct challenges that differ from patent disputes between competing operating companies. Because PAEs do not manufacture products or provide services, traditional counterclaim strategies—such as asserting the defendant’s own patents against the plaintiff—are generally unavailable. This asymmetry in litigation exposure requires defendants to develop alternative defense frameworks that address both the merits of the asserted patents and the procedural dynamics unique to PAE litigation, including coordinated multi-defendant strategies, inter partes review proceedings before the Patent Trial and Appeal Board, and motions challenging patent eligibility under prevailing Supreme Court and Federal Circuit authority.
Legal and Strategic Considerations
Defending against PAE claims requires an early and rigorous evaluation of the asserted patents’ validity, enforceability, and scope. Many patents held by assertion entities were originally obtained by operating companies and later transferred—sometimes through multiple intermediaries—to entities whose sole function is monetization through litigation. Tracing the chain of title and examining the prosecution history of the asserted patents can reveal weaknesses in the claims, including prior art references that were not considered during examination, prosecution history estoppel that limits claim scope, and potential issues with inventorship or assignment that may affect standing to sue.
Technology companies facing PAE litigation have developed a range of procedural and substantive defense strategies that reflect the distinctive economics and dynamics of these disputes:
- Inter partes review (IPR) petitions filed with the Patent Trial and Appeal Board provide a parallel forum for challenging patent validity on prior art grounds, often at lower cost and on a faster timeline than district court litigation, and a successful IPR can cancel the asserted claims entirely.
- Early motions to dismiss under 35 U.S.C. § 101, arguing that the asserted patent claims are directed to abstract ideas, laws of nature, or natural phenomena, have proven effective in certain technology-related disputes, particularly where the patent covers software-implemented processes or business methods.
- Joint defense arrangements among co-defendants targeted by the same PAE allow for the sharing of litigation costs, coordination of invalidity defenses, and development of unified claim construction positions that can strengthen the collective defense posture.
- Fee-shifting motions under 35 U.S.C. § 285, which permits courts to award attorney fees in “exceptional cases,” serve as a deterrent against frivolous assertions and may be pursued where the PAE’s litigation conduct or the weakness of its infringement theories warrants such relief.
- Settlement analysis in PAE cases requires balancing the cost of continued litigation against the licensing demand, while also considering the precedential effect of settlement on future assertions against the same company or its industry peers.
Outcome and Broader Significance
The proliferation of patent assertion entities has prompted significant debate within the legal and technology communities regarding the balance between patent holder rights and the burdens imposed on operating companies by litigation-driven monetization models. Legislative proposals, judicial reforms, and the establishment of the inter partes review (IPR) process at the Patent Trial and Appeal Board have collectively reshaped the landscape for PAE litigation, providing defendants with additional tools to challenge weak or overly broad patent assertions.
For technology companies, the institutional defense against PAE claims extends beyond individual cases to encompass broader portfolio management, industry coalition participation, and proactive strategies designed to reduce exposure to future assertions. The development of prior art databases, defensive patent pledges, and coordinated industry responses to serial asserters reflects an evolving recognition that PAE litigation requires both case-specific defense capability and a longer-term strategic perspective on intellectual property risk management.
