First off, it wasn't bogus - which is why micron lost. I'm no lover of RAMBUS but they absolutely had valid patents, and they did sell product. They lost the battle because their product was ultimately inferior and more expensive, but that doesn't change the fact the core technology behind DDR memory infringed on their ideas. As for how it's still valid - it doesn't matter. If you infringe a patent, get sued, and the patent runs out before the court case finishes, you aren't magically exonerated from all the years you infringed on the patent while in court. Doesn't work that way champ.