Background
Perfect Web Technologies held U.S. Patent No. 6,631,400, which claimed a method for managing bulk email distributions to targeted recipients. The claimed process involved sending emails to groups of targeted addresses, checking whether the required number of deliveries had been completed, and repeating the sending process to additional address groups if the target delivery count had not been reached. In essence, the patent described a loop: send emails, check results, and send more until the delivery quota is met — a process for ensuring that a bulk email campaign successfully reached the desired number of recipients.
InfoUSA (an internet marketing and data company) was accused of infringing the patent. InfoUSA moved for summary judgment of invalidity on obviousness grounds. The Southern District of Florida granted the motion, finding the patent claims obvious in light of prior art and common knowledge in the email marketing industry.
The Court’s Holding
The Federal Circuit affirmed. Applying the Supreme Court’s KSR International v. Teleflex (2007) framework for obviousness, the court held that the claimed method was the product of routine, predictable problem-solving requiring only ordinary skill in email marketing — not inventive ingenuity. The court noted that prior art disclosed the basic mechanics of bulk email delivery, email bounce management, and list management, and that combining these known elements to create the claimed send-check-repeat process would have been obvious to any person with limited marketing and computer experience.
The court also made an important procedural point about common sense in obviousness analysis: under KSR, a court can rely on common sense — the knowledge that a person of ordinary skill brings from their background and experience — to fill gaps between prior art references without requiring every step of an obvious combination to appear in a printed publication. Here, the logical step of repeating an email distribution to reach a delivery quota was exactly the kind of “common sense” solution that KSR contemplated, requiring no special insight or creativity.
Key Takeaways
- Under the post-KSR obviousness framework, courts may rely on common sense — the knowledge a skilled person would bring from their field experience — to bridge gaps between prior art references without requiring every claimed step to appear in a printed publication.
- Internet and email marketing patents are not immune from obviousness challenges simply because they describe technical processes in digital terms; if the claimed steps involve routine combinations of known techniques, the patent is likely invalid.
- The simplicity of a claimed method can actually weigh against its patentability — a process so straightforward that only “a high school education and limited marketing and computer experience” would suffice may lack the non-obviousness required for a patent.
- Post-KSR, the teaching-suggestion-motivation test is no longer the only path to proving obviousness; courts can independently assess whether the combination of known elements would have been obvious to a skilled person.
Why It Matters
Perfect Web v. InfoUSA is an instructive application of the post-KSR obviousness analysis to internet and digital marketing patents. The Federal Circuit’s willingness to invalidate a patent on a multi-step email delivery process — using common sense as a building block of the obviousness analysis — sent a clear message that the KSR decision had real teeth even for patents on internet-era technologies that might superficially appear novel.
For the patent bar, the case established that “common sense” is a legitimate and powerful tool in obviousness analysis, not a vague catch-all but a recognition that people of ordinary skill in a field bring substantial background knowledge to their work. For companies operating in the digital marketing, e-commerce, and internet services space, the ruling reinforced that patent protection for routine automation of obvious business processes faces significant headwinds under post-KSR obviousness doctrine.