Dear Legal Notice by Mercedes Benz,
Mercedes Benz is a well known trade name for which they have obtained trademark registration and copyright for their symbol. Use of any part of their name amounts to infringement. RoC is not the benchmark and their search is entirely limited to Companies only. For example, HUL (Hindustan Unilever Limited) manufactures a cosmetic PONDS but if you go to the RoC, you might get a company registration as the word PONDS will not be available in the records of Companies. However, HUL can initiate a legal suit against you for trademark infringement as PONDS is their brand and trademark protects a brand name so as to create monopoly in the market. The reason for this is very simple.... if you use PONDS, then general public will believe that you are associated with HUL and considering that PONDS has garnered a tremendous goodwill, you will get business only on the immaculate goodwill of the PONDS brand and hence to protect the brand, HUL can initiate a case against you even though you are registered with RoC because Trademark Act reigns supreme.
Further, you can go through the following case for your understanding (Please read the entire case)
However, if you can prove that you are using Benz prior to that of Mercedes Benz, then as per Section 34 of the Trademarks Act, you can fight the Advocate Notice or case thereof otherwise it is advisable to change the name.
Further, be advised that even if Mercedes Benz doesn't have a trademark or a copyright, they are entitled to protection under Section 27(2) of the Trademarks Act, 1999 which says that even if a trademark is not registered, but protection can be granted under the common law if the person filing the suit (in this case Mercedes Benz) can prove that he has garnered immaculate goodwill along with prior usage. If you cannot prove that you existing prior to Mercedes Benz, its always advisable to change the name Benz.
Again copyright subsists from the day one starts using the artistic work. Hence, in your case you stand to lose. Please be advised that unless yo can prove use prior to that of Mercedes Benz, RoC registration wont help.
I hope the above explanations clear your doubts.
If you have further doubts, you can call on 9903207337 for further consultations.