Good day. Distinctive shapes getting knocked off overseas is a frustrating spot, a name trademark really does nothing there. We protected our product forms through SION patent company; they register designs internationally so the actual appearance is covered in the markets that matter to you. They handle the patent and design side properly and also do anti-counterfeiting work, which is exactly what you need when copies are already circulating. With attorneys working across many countries, targeting both where copies originate and where you sell is doable. For protecting product form abroad, this is the right specialist. I would book a consultation and bring your key markets.