Similarity of design (Infringement case)
(Conclusion) Defendant’s design is not Similar to the registered design. (Design right owner lost.)
The registered design intensifies the regular and static impression because the first barrel lower surface is line symmetric.
On the other hand, Defendant’s Discharge lamp intensifies the irregular and dynamical impression because the first barrel lower surface is not line-symmetric.
⇒ non-infringement
<Writer: Hideki Takaishi (Attorney-at-law licensed in Japan and California)>
https://www.ip.courts.go.jp/app/files/hanrei_en/803/000803.pdf