Trademark is a logo, name, sign or mark which is used to differentiate the goods or services of one party/person from those of others. Trademark may consist of drawings, symbols, shape, number, word, sound, smell and packaging of goods or colors used as distinctive feature.

(for an unregistered trademark)
(for a registered trademark)
Only owner of a registered trademark can use the symbol in India.. There is no prohibition on the use of the symbol in India.

Applicable Act
The law of trademarks is governed by the Trade Marks Act, 1999. The Act provides for the registration of trademarks relating to goods and services in India.

Qualities of a Good Trade Mark
A good trademark should hold the following qualities-
Easy to pronounce, spell, remember.
Should be distinctive and should not have deceiving similarity.
Should not be explanatory.
Admiring word/words such as best, perfect etc. should be avoided.
Note: Registration is not mandatory but it is worthwhile to do so.....Read More

ajsh (dot) in