Willful Blindness

Willful blindness is a legal doctrine holding that a defendant who deliberately avoids learning of a patent's existence — in order to escape infringement liability — is treated as having actual knowledge of the patent: GLOBAL-TECH APPLIANCES, INC. v. SEB S.A. (S.Ct. 2011): the Supreme Court held that willful blindness can substitute for actual knowledge in claims for INDUCED PATENT INFRINGEMENT under 35 U.S.C. § 271(b); SEB's BACKGROUND: SEB (a French company) had a patent on a cool-touch deep fryer feature; Pentalpha purchased SEB's fryer in Hong Kong, copied it, and sold to Sunbeam (which sold under the Global-Tech brand); Pentalpha had obtained a U.S. patent clearance opinion but the attorney who performed it was not told the product was copied from SEB's fryer; the Federal Circuit held willful blindness = knowledge; the Supreme Court affirmed; TWO-PRONG TEST: the Supreme Court adopted a two-prong standard for willful blindness: (1) the defendant must SUBJECTIVELY believe that there is a high probability that a fact exists (here, that a patent covers the product); AND (2) the defendant must take DELIBERATE ACTIONS to avoid learning of that fact; OBJECTIVE UNCERTAINTY IS NOT ENOUGH: if a defendant is merely unaware of a patent due to carelessness or ordinary inadvertence, that is not willful blindness; the defendant must actively work to avoid knowledge of the patent.

Willful blindness was specifically adopted as the knowledge standard for induced patent infringement under § 271(b): § 271(b) INDUCED INFRINGEMENT REQUIREMENTS: the Supreme Court in Aro Mfg. Co. v. Convertible Top Replacement Co. (S.Ct. 1961 and 1964); Global-Tech (2011): induced infringement requires: (1) actual infringement by a third party (the direct infringer); (2) the defendant's knowing inducement of that infringement; (3) the defendant's knowledge that the induced acts constitute patent infringement — not just knowledge of the patent; PRE-GLOBAL-TECH AMBIGUITY: before Global-Tech, the Federal Circuit applied different standards for the knowledge requirement; some decisions only required knowledge of the patent; Global-Tech resolved that actual knowledge or willful blindness is required; WHAT WILLFUL BLINDNESS ADDS: a defendant cannot escape induced infringement liability by deliberately refusing to read a patent that is sent to it, or by refusing to learn about a patent that is referenced prominently in prior art; PRACTICAL IMPACT: a defendant who: (a) knows it is in a competitive field where patents exist; (b) copies a competitor's product without checking for patents; (c) deliberately avoids any patent clearance that might find blocking patents; ... can be found to have willful blindness and thus knowledge for induced infringement; DISTINGUISHED FROM RECKLESSNESS: recklessness (disregarding a known substantial and unjustified risk) is not willful blindness; willful blindness requires SUBJECTIVE belief in HIGH PROBABILITY + DELIBERATE AVOIDANCE.

After Global-Tech, willful blindness also applies to the knowledge element of contributory infringement under § 271(c): § 271(c) CONTRIBUTORY INFRINGEMENT: requires knowledge that the supplied component is especially made or especially adapted for use in an infringement of a patent, and that the component is not a staple article of commerce suitable for substantial non-infringing use; KNOWLEDGE ELEMENT: contributory infringement also requires knowledge of the patent and knowledge of infringement; Global-Tech: applied the willful blindness standard to the contributory infringement context as well; PRACTICAL APPLICATION: a component supplier who: (a) knows it supplies specialized components for a product in a patent-intensive field; (b) suspects those products might infringe patents; (c) deliberately avoids learning about specific patents that might be infringed; ... can be found to have constructive knowledge (via willful blindness) sufficient for contributory infringement; COMPARED TO INDUCEMENT: inducement and contributory infringement both require knowledge; willful blindness satisfies the knowledge element in both cases; LIMITATIONS: the two-prong test is still rigorous; mere negligent failure to investigate is insufficient; there must be both subjective belief in a high probability of patent existence AND deliberate avoidance of investigation.

Proving willful blindness requires evidence of both subjective awareness and deliberate avoidance: EVIDENCE OF SUBJECTIVE BELIEF IN HIGH PROBABILITY: (1) INDUSTRY KNOWLEDGE: the defendant knew it was in a patent-intensive field and that products like the accused product were commonly patented; (2) COMPETITOR AWARENESS: defendant knew specific companies in the space aggressively patent their innovations; (3) SIGNAL EVENTS: defendant was told by a third party that the copied product was proprietary, that the design was protected, or that the space was heavily patented — but chose not to investigate further; (4) PRIOR PATENT EXPERIENCE: defendant had previously dealt with patents in this field and knew they were common; EVIDENCE OF DELIBERATE AVOIDANCE: (1) INCOMPLETE CLEARANCE: patent clearance obtained but intentionally incomplete — e.g., attorney not told the product was copied from a competitor (as in Global-Tech); (2) INSTRUCTIONS TO AVOID: internal communications instructing employees not to read patents to maintain 'ignorance'; (3) NO INVESTIGATION DESPITE RED FLAGS: after receiving notice of competitive patents or after copying a competitor's product, deliberately failing to conduct any patent investigation; (4) MISLEADING ADVISORS: providing incomplete information to patent counsel to obtain a 'clean' opinion that masks the true risk; DEFENDANT'S REBUTTAL: to rebut willful blindness, the defendant shows: (a) they were genuinely unaware of the patent risk (not deliberately blind); (b) they conducted reasonable patent clearance and the patent was not found; (c) their failure to discover was inadvertent, not deliberate.

Willful blindness and willful infringement address different questions in patent law: WILLFUL BLINDNESS: addresses whether a defendant had KNOWLEDGE for purposes of indirect infringement liability (induced and contributory infringement); a defendant without knowledge cannot be liable for indirect infringement; willful blindness substitutes for actual knowledge; applies to § 271(b) and (c); WILLFUL INFRINGEMENT: addresses whether a defendant's infringement was 'willful' for purposes of ENHANCED DAMAGES under 35 U.S.C. § 284 and attorney fees under § 285; Halo Electronics v. Pulse Electronics (S.Ct. 2016): willful infringement requires subjective recklessness — 'wanton, malicious, and bad-faith' conduct; the defendant must have known of the patent risk and proceeded anyway with reckless disregard; willful blindness (deliberately avoiding knowledge) could constitute willful infringement IF combined with the requisite subjective recklessness; INTERACTION: a defendant found to have willful blindness for indirect infringement may also face enhanced damages if the deliberate avoidance of knowledge, combined with the conduct of infringing, constitutes willful recklessness; the two doctrines can overlap but address different elements; DIRECT INFRINGEMENT: direct infringement under § 271(a) does NOT require knowledge of the patent — it is a strict liability offense; willful blindness is irrelevant to direct infringement liability (though relevant to willfulness analysis for enhanced damages).