[...] where's the problem then? [...]
The problem is that Seven Towns doesn't do a lot on their own, regarding private consumers who order few cubes, they'd probably do nothing at all but let them have the cubes.
But as stated Seven Towns employs legal companies all around the world to do the job. And if a customs officer opens a package (or even containers), finds cubes inside and knows about the copyright (or cares about finding out if there is a copyright problem - which he should do if he does his job as meant to be), then they forward the issue to the legal company who is responsible in that country. These lawyers then have to spent time answering the requests by the customs office - and time is money. So those legal companies aren't like "Screw it, it's only 3 cubes, forward them to the customer... and present compliments!" of course they want to make money out of every possibility and that eventually is causing the problems some of us had/will have (eventually caused by yourself by importing illegal things).
Someone else before asked why they would go after us, not the producers of those copyright infringing cubes? Well, for those who are not familiar with chinese knock-off practices: Some of the manufacturers of "Magic Cubes" (or whatever else, e.g. Shoes, T-Shirts, Tablet-PCs, ...you name it) are probably aware of the fact that they are producing illegal items but simply don't care for the benefit of quickly earned money. Others probably simply ignore existing copyrights because they have their own "patent" and think they are right... A "patent" only valid in the country where it was granted - in this case usually a asian country, where you often (unfortunately?) can buy anything from authorities anyway if you bring enough money; and patents that are useless as long as the finished product still infringes other copyrights. And lastly some producers really may be not aware of the fact that there are copyrights for something like a Rubiks Cube.
So, say Seven Town employs a local lawyer to go after a specific KO-company: This lawyer then is going to inspect that facility, bringing some customs officials and policemen along with him to seize everything used to produce pirated products related to his orders. But due to corruption those companies often get to know about these visits in time - so they simply move their production facility or e.g. objectionable molds to another place. All that's left is a huge bill for all the efforts that Seven Towns has to pay with basically receiving no results. And even if someone gets caught and stuff is destroyed or taken away, they simply produce new molds and start producing again somewhere else.
As you now may realize, this procedure is not really effective... opposed to simply let custom officers do their job in the countries we live where as a result - unfortunately - we are the ones to suffer.
Do I as a speedcuber, a person being affected by all this, like the way things are? In this case, not really. But eventually it is on me as a responsible customer to be aware of what I am allowed to import and what not. "Ignorance of the law is no excuse." This means if I still decide to take the risk of importing items that are illegal and I get caught, than I have to live with possible consequences.
So what to do about it? Either order from store based in the country where you lice or order DIY-Kits; I personally prefer them anyway and that usually prevents these kind of copyright problems.
anyway, in all objectivity Seven Towns is in the right doing what they do. If we like it or not. If they would not care about KO products, shops (and I'm talking about retail stores, not only internet shops) would be flooded with those 'illegal' cubes and the copyright owner could harldy make any money. That is not only true for Seven Towns but basically for any copyright owners.
And to the lawyers it usually is all or nothing, there is no difference between internet shop owners, retail store owners and consumers - they all import illegal items if they order cubes that resemble the looks of a Rubiks Cube (from the outside - as this is what is copyrighted).
As Stefan said, this isn't a new problem to us cubers and after things peter out it surely sometime will come up again. This wasn't the first time.
Thinking of Seven Towns even sponsoring some of our competitions on one hand (without closely looking at the cubes we use) while going for those who infringe their copyright (everyone importing copyright infringing cubes) puts us in a grey area: It's a kind of symbiosis we all should be aware of.
Hence I think stirring up the issue thus far as some cubers recently do, here and elsewhere, some without knowing/caring about coherences or worse, without some real education regarding patents and copyrights apart from their personal conclusions proportional to what they claim, Those cubers may do even more harm than good (thinking of getting customs attention resulting in more packages getting destroyed on a regular basis, losing Seven Towns as a sponsor,... maybe a little far fetched but not too unlikely when thinking of a few naive kids telling the press during interviews at competitions).
If you simply don't like capitalism as well as it's rules - which on a very basic level are the reasons for these issues - and thus you complain and scold Seven Towns, you either live in the wrong country or you should go into politics to make some changes.
What you actually should to instead of cursing Seven Towns is throw some light on how to prevent copyright infringements by ordering the right things (not in a legal way, but in a way causing the least problems).
Again: if possible order from local stores only or limit yourself to DIY kits.
