I agree that it seems to be unethical. But I think that oversimplifies the situation....when a knife is produced that is a visual clone of an existing knife (without any compensation to the original maker), that doesn't seem ethical.
1. There isn't any official definition of "clone" or "visual clone" and as some of the exchanges in this thread demonstrate, what one person thinks is a clone, another might think is quite different in design.
2. Just because a knife is a clone doesn't mean that anything has been done that is unethical. If the design has been around for many decades then logic says at some point it must pass into the public domain as would be the case with any other intellectual property. That brings up another question--the lack of legal protection means that there's also a lack of a legally/clearly defined time boundary for the expiration of intellectual property "rights" for knife designs. So it's a judgement call/personal opinion as to how long it takes for a design to pass into the public domain.
3. What's even worse is that because no one is officially keeping track of knife designs (a la patent/copyright/etc.) there's no guarantee that a given design that's being "cloned" (whatever that means to the person making the claim) isn't actually a clone of another design, either intentionally or unintentionally. Which means that even if we could establish what constitutes infringement, it's difficult to know who's infringing and who's not.
It appears to me entire concept of knife design rights is a wobbly construct built on a foundation of personal opinion, judgement calls and assumptions.
From a practical standpoint, only a very tiny fraction of the knife market is going to have any idea or even care about what is going on with various designs, where they originated and when, if the knife they're buying is a tribute copy, a cheap copy, a clone of a knife in the public domain or an original design. Or even what many of those things mean. Which means that getting traction to change things might be impossible--even if we could agree on what changes need to be made.
What I think it all boils down to, is that until the industry can nail down some very basic concepts about knife design intellectual property, this topic is almost totally subjective. It comes down to feelings. "I feel like knife A is an original design/common design." "I feel like knife B is/isn't a clone of knife A." "I feel that it's ethical/unethical to clone a knife that's been in the public domain 10/20/20/100 years." "I feel like company X is being unethical/ethical for making a knife that's too similar/quite different from a knife made by company Y that is/isn't their own original design."
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