Car navigation systems, DVD players, liquid crystal displays, solar panels, DRAM memory and lithium ion batteries are products that have been invented and developed mainly by Japanese companies. The companies created new markets and got high market shares with many patents to exclude rival companies. Then the world’s markets expanded several times larger in scale. They kept investing high amounts in R&D for higher functionalities. Their world’s market shares recorded once more than 80% in all above-mentioned products except for DRAM memory (more than 40%). However, even though the market expanded, their shares have been drastically decreasing although they had developed cutting edge technologies with many patents related thereto. There is one report (Masahiro Samejima et al., Encouragement of IP Strategy, February, 2016), which analyzed the reason of their defeat in business and introduced a new interesting point of view. I would like to briefly discuss it here.