1) You are now aware of the patent and continuing to willfully infringe
2) You're going to spend days obsessing on how your idea is different, or they didn't think of this or that, or this tiny edge case convincing yourself of non-infringement.
In both cases any patent litigation attorney worth their salt will absolutely murder you. The best part is so many broad patents exist that everything infringes on one.
The search is very cheap and easy, and then you can decide if the risk is worth it.
I wish we would tie patent fees to the assets of a company, or person. Basically the wealthy boys would pay much more for a patent, and low income individuals woukd pay less, or nothing.
So a big company might think twice about an exponential government fee when they are on their 100 patent.
I’m sure your guys have done a ton of prior art, but I want to encourage you to make sure Amazon hasn’t patented this in any capacity yet.
A close friend that worked at Prime Air shared how years ago their division had a full time legal staff dedicated to patenting all engineers ideas. He had gotten several patents even being entry level FWIW. They had several concepts very similar to this and it wouldn’t surprise me if they were able to get that IP locked down. Like I said, I expect you all have checked and rechecked but thought it’s worth mentioning.