Would Bill and the team at EPCC be able to tell me if my design is too close in similarity? I have the basic shapes of the cards laid out, and while the back is beautiful, I want to follow those patterns, but make it my own. Personally, I just want to make a deck of cards that people would love to use as a set of workers, and while I think Superiors are great, they don't have that "IT" factor that bikes, tally's, Tahoes, and Studs have.
Also Don, thank you for always responding. It's one of the best things to actually get to talk to someone of your caliber.
Thanks for the compliment.
I'm sure Mr. Kalush will offer his input if you ask - he's very unlikely to be printing something for you that runs afoul of trademarks or copyrights. However, he's not a lawyer, and even if your lawyer says, "it's fine," if USPC's lawyers say "no, it's not," the cost of a lawsuit defense can cripple or destroy a project.
To be safe, make something "inspired by" Tahoes, but not too close to them, either. I'd also suggest checking with Expert to see if they can offer you a modern or vintage standard face. I know USPC's standard faces are too generic to be copyrightable or trademarked, but I don't know if their Arrco faces fall into the same category or not - I'm not a legal expert. By using Expert's faces, you get something easily recognized and legally safe - just make custom Aces and Jokers.
Think in terms of what face style you want to offer. A modern deck will be more easily "identifiable" to your worker's audience, inspiring them to think, "Those are just like the ones we use back home." But a slightly more vintage look might give you a more distinctive look while taking away only a little from the identification factor. For example, some older decks have smaller indices, larger pips, an older look to the court cards with a little more detail and complexity, etc.
For a performing deck, you might also go for a better visibility factor - I've seen a really cool deck from Phoenix called Phoenix Parlor Cards. They're an in-between size between a jumbo card and a poker card, and the art is a unique mix - standard art in the card faces, but jumbo-sized indices for better visibility from the far side of the audience. Now, some people might find cards that big to be a bit too much, but maybe with a little tweaking of a poker-sized card style, you could develop a card face that takes advantage of that type of appearance dynamic - slightly-reduced artwork on the cards, slightly-increased index size.
Alternately, if you just amped up the vintage factor, going in the other direction, with old-school big pips and tiny indices might be more to your preference. Just be aware you have some interesting style choices to consider!