General: Share Price, Trades and chart related discussions, page-2200

(R) & (TM) have nothing to do with patents, they refer to trademarks -
® : The ® symbol can only be used once a trademark or service mark have been registered by a country entity or organization. It indicates that the country authority has approved the registration.
TM: The TM sign is used to signal an unregistered trademark, indicating a brand name for a product (classes 1 to 34). This sign can be designated by the owner indicating their belief of the trademark.

the difference between TM, SM, ® and other symbols