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Kooks actually owns the patent on the merge spike in their headers. It cost them thousands of dollars, and several years to get. Once they did get it, everyone just changed the design of their merge spikes slightly to get around it. Even if they wanted to enforce it, patent enforcement is VERY expensive, and takes several more years. Tech companies routinely spend millions trying to defend and enforce a single patent. When you spend years and billions to design a single drug thata companies hopes are pinned on, it is nothing to get a patent and spend millions defending it. However when you have 400 part numbers, which sell anywhere betwen 40 and 2000 units a year (me just guessing on volume), dropping $5-10K to patent each part, just so you can chase companies around ebay is not an effective use of resources.
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