I would have thought that Microsofts lawyers would have gone those all the current trademark records for Bing with a fine toothcomb BEFORE they even made an offer on the name, never mind spending $80 to $100 million marketing it.....they're not idiots.
There can be a thousand trademarks for the word bing as it also depends on what it is being used for
Microsofts TM use is
Word Mark BING
Goods and Services IC 009. US 021 023 026 036 038. G & S: computer search engine software; graphical user interface software, namely, toolbar software for use with search engine software and websites
IC 035. US 100 101 102. G & S: advertising services; dissemination of advertising for others via the Internet; providing consumer product information via the Internet; advertising and directory services, namely, promoting the goods and services of others by providing a website featuring links to the websites of others; providing online directory services featuring business and personal directory information; providing an Internet website featuring news and information in the fields of national and international politics and business
IC 038. US 100 101 104. G & S: telecommunication services, namely, receipt and delivery of information, messages, documents, images and other data by electronic transmission; streaming of audio and video on the Internet
IC 041. US 100 101 107. G & S: education, namely, providing training and tutorials in the field of computer searching and online advertising; entertainment services, in the nature of providing online news and information in the fields of entertainment, education, pop culture, cultural activities and exhibitions, sports, and other non-business and non-commercial fields, namely, games, music, literature, the arts, television, films and performance art
IC 042. US 100 101. G & S: computer services, namely, providing search engines for obtaining data on a global computer network
PLUS
Word Mark BING
Goods and Services IC 039. US 100 105. G & S: providing a web site and web site links to geographic information, map images, and trip routing
...Does Bing Information Design even have a current trademark for Bing ??? I could'nt see one.
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