In software, assume that everything is already patented. You can%u2019t build anything, no matter how new it is, without infringing someone%u2019s patent.
E. Raymond. O'Reilly Media, Beijing; Cambridge; Farnham; Köln; Paris; Sebastopol; Taip, 2., überarb. und erw. A. edition, (2001)With a foreword by Bob Young.