This is basically a tube with ribbing at each end. While you can’t really copyright a tube, she can copyright her wording for how to make the tube and any photos.
You can make any tube you want, you can’t print out her pattern as she wrote it and sell it, etc. You could write your own that could look almost identical.
For example, I have a free slipper sock pattern on my web page. I call it more a sock recipe, because really… anyone who knows socks very well knows how to build a basic sock on a 32 stitch cast on with a k1, p1 ribbing.
I posted it because some of the people who read my blog saw the ones I made and wanted a written pattern for them. I knit them using basic sock construction. Nothing new, nothing fancy.
If I went around to craft sales and saw a bunch of socks with a 32 cast on cuff and a k1, p1 ribbing, there is NO way I could prove that it was from my pattern, because it’s such a basic “recipe” for sock knitting.
However, if the person used the same yarns and colors scheme (which is a little unusual) I MIGHT have a case, if I even cared but even then it would be very iffy and rather over the edge for me to try and claim.
So why did I put a copyright notice on my pattern?
Despite is being a very basic sock recipe, I put a fair amount of time into writing it out in a usable manner, proof reading it, and my daughter spent time formatting it to put it up online in an easily readable, printable form.
I WANT people to enjoy and use this pattern. It’s why I went to the trouble of typing it up. It also brings traffic to my blog. I enjoy that. I don’t really care if a knitter makes a ton of them and give, sell whatever…
However, I don’t want to find that some shop is printing the pattern and profiting off my work of putting the pattern in usable manner without asking or anything. I don’t want to find the work I did on someone’s web site claimed as their own. I don’t care if they put a link to the free pattern on my site, in fact I appreciate that.
So I put a copyright notice on it to let people know that I maintain the right to control on how my own photos, instructions, etc are used.
But I have no control (nor do I want to or claim to) over anyone who wants to knit a sock with a 32 stitch cast on in a k1, p1 rib It’s a very basic recipe used for years before I was even born.
So knit a similar tube to your heart’s content. I really don’t think there is an issue.
As with recipes… the printed form they take, the written directions, can be copyrighted. The ingredients or even mix of ingredients really can’t.