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It's clearly not a patent issue, since tensioned UD fibre has been used by plenty of people other than Lightweight, it's just rank stupidity on the part of Madfiber (clue is in the name). All the fibres at right angles to the tensile load are contributing precisely nothing to the strength of the spoke, and are probably increasing the probability that a crack in an edge will propagate across the full width of the spoke.

Sure the perpendicular fibres won't be bridging any crack that wants to propagate, but increase the probability that the crack will propagate? magically reducing the fracture toughness by their presence? I find that unlikely.