
Speaking only for the US patent system here, but this can probably be patented in an extremely extensive way. If the company wants to be really protectionist, they could probably get a talented (and extremely expensive) patent prosecutor to keep the consumer kitchen knife market locked down for a while. Any alternatives would probably have to license the patent.









I’ve been using a Klean Kanteen for a decade now, and I have nothing but positive things to say about them. The straw lids come apart very easily for cleaning, and each of the parts is separably replaceable. When my partner needed to replace the silicone mouthpiece but couldn’t find it on the website, we just emailed their support and they were more than happy to send us a replacement free of charge.