(2) B's behavior does not constitute copyright infringement, and the content of copyright is often related to dissemination, reproduction and adaptation. The publication of the paper is actually for others to understand and use, but it does not produce a patent, and B's behavior does not involve the content of copyright.
(3) C's illegal stealing of design drawings infringes the copyright, belongs to unauthorized copying for commercial purposes, and infringes the licensing right. However, if the drainage pipe is made according to the drawings, there will be no infringement of copyright.
In fact, this reflects the disproportion between some researchers' emphasis on papers and their emphasis on patent applications. After the publication of the paper, the results lose novelty, and it is impossible to apply for a patent, which often leads to the great loss of the creator's economic interests. Of course, this is also related to the current domestic scientific research evaluation system, in which the publication of papers plays an important role.