The trademarks for the word Bitcoin in Japan and the European Union as well as the domain name bitcoins.com are now up for sale, three months after the collapse of the world's largest Bitcoin trader.

The Bitcoin trademark and the domain name were registered by Tibanne, the company owned by Mark Karpeles, the former chief of Tokyo-based Mt. Gox, which used to the be largest trader for the virtual currency before its collapse in February.

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The trademark registration was approved by Japan and the EU in 2012 and will expire in 2021, according to the patent authorities of the two countries.

The holding company of Mt. Gox said it is looking to raise at least 100 million Japanese yen, or roughly US $1 million, for a package that includes the trademarks in both countries and the domain name.

It was not immediately clear if the proceeds of the sale will be used to repay the 127,000 creditors of Mt. Gox. Tibanne was believed to be the operator of Mt. Gox. They shared the same office address in Tokyo prior to the controversial collapse of the exchange.

When it filed for bankruptcy protection in February, Mt. Gox had total debts of 6.5 billion Japanese yen (about US $56 million). It also said that around 850,000 bitcoins were lost, although it recovered about 200,000 of the missing virtual currency.

The collapse of Mt. Gox immediately concerned financial regulators around the world, with China issuing orders on major banks against transacting with Bitcoin-related accounts.

Last month, more banks in China announced that they will also prohibit any institutions or individuals from using their bank accounts to trade bitcoins

The banks include Agricultural Bank of China, China Guangfa Bank and Shanghai Pudong Developmeng Bank. Earlier, the China Merchants Bank, China Construction Bank, and Bank of China also made similar announcements.

Tagsbitcoin, bitcoin trademark, bitcoin domain name, bitcoins.com, mt. gox