This is as bad as Harley Davidson trademarking the sound of their motor bikes.
How do you patent a sound.
I had a rich woman comment with a big smile on her face after I started My Triumph up with strait pipes "Nothing sounds like a Harley". I told her, "sorry mam, it's a Triumph". She said, "WHAT"
But this is a thread about sweet potatoes which happens to be in the potato section of this forum and it isnt a potato but it is in the same order as the potato but not in the same family. It is sometimes called a Yam which it isn't and a Yam isn't even in the same order or family as the potato or sweet potato.
The next time you have candied YAMS for dinner you just aint gonna do it, you are having candied sweet potatoes.
So what the heck, I wouldn't give two hoots and a holler about any stinking patent on a plant that it seems as though not anyone can figure out what to call anyway.
What a mouth full
Worth