Is It Legal to Sell Major Brick Compatible Minifigures?
If you've wondered how so many companies legally make and sell Major Brick Compatible minifigures and bricks, you're not alone. The short answer: the core patents expired long ago, so building to the public-domain brick standard is legal. Here's a plain-English explanation of why the compatible market exists.
Note: this is general information, not legal advice. For specific legal questions, consult a qualified attorney.
Expired patents: the key reason
The fundamental patents on the classic stud-and-tube brick design expired decades ago. Once a patent expires, the invention enters the public domain, meaning other companies can legally manufacture compatible products. This is why a whole industry of compatible bricks and figures exists — the basic interlocking design is no longer protected.
What's still protected: trademarks
While the brick design is fair game, brand names and logos of the major manufacturers remain trademarked. Compatible makers can build to the standard, but they can't use a protected brand name or pass their products off as a genuine name brand. That's why quality makers brand their own products clearly.
Compatible figures are legal to make and sell — they build to a public-domain standard under their own brand.
Why this is good for builders
The expiration of those patents is exactly what gives builders choice, variety, and lower prices. It's why you can find deep military and tactical themes and affordable bulk sets that the original brand doesn't offer. Competition benefits the hobby.
Buying and selling responsibly
Quality compatible sellers are transparent — they brand their own products, state they're compatible (not genuine), and use ABS plastic. As a buyer, look for that transparency. As a seller, never market compatible products as a genuine name brand.
The bottom line
Yes — selling Major Brick Compatible minifigures is legal, because the core design patents expired and the products build to a public-domain standard under their own brands. The trademark on the brand name is what compatible makers respect. Browse the Brick Bros minifigure collection for quality compatible figures.