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It describes a circle with parameterized wobbles? That is a pure mathematics problem, not in the realm of patents at all. Why are you certain they're acting validly?

It seems misleading to even call it an algorithm.

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I deal routinely with use patents in the medical field. There's a chemical that's been in use for 30+ years to stabilize polymers from ionizing radiation. It's used in practically all gallon milk jugs to protect them from UV degradation. A company has a bright idea in 2006 that this chemical would also stabilize medical device plastics during sterilization (usually gamma radiation), and get a use patent on this stabilizer for use in the medical industry. 30+ year old technology, used in several fields, but requires licensing to use it in medical devices. And this is a world patent.

I'm guessing the patent would be a use patent. The patent is on a specific use of the math (although it doesn't sound all that specific from the claims that I've seen).

It infringes on my x^2 + y^2 = 1 patent, as does the letter 'o'.

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