Here [nikkeibp.asiabiztech.com] is an interesting article on a Domain Name dispute in Japan that also throws light on some of JPNIC's rules for domain name ownership.
Onya Woz
Woz
11:04 pm on Dec 20, 2000 (gmt 0)
The (Japanese) International Trade and Industry Ministry plans to revise the Unfair Competition Prevention Law to prevent illicit use of corporate and product names by nonrelated parties in their Internet domain names.