https://www.law.cornell.edu/uscode/text/15/1111:
a registrant of a mark registered in the Patent and Trademark Office, may give notice that his mark is registered by displaying with the mark the words “Registered in U.S. Patent and Trademark Office” or “Reg. U.S. Pat. & Tm. Off.” or the letter R enclosed within a circle, thus ®; In point of fact, writing “Unicode®”, however the symbol appears, is legally equivalent in the US to "Unicode Registered in U.S. Pat. & Tm. Off." P. -----Original Message----- From: Peter Constable <[email protected]> Sent: Wednesday, September 18, 2024 1:52 AM To: Ivan Panchenko <[email protected]>; [email protected] Subject: RE: Position of the registered sign The US Code Title 17, section 401 specifies simply the symbol © (the letter C in a circle), or the word “Copyright”, or the abbreviation “Copr.”; https://www.copyright.gov/title17/92chap4.html I don't think any US court is likely to support a claim that superscripting of the symbol is semantically significant. Peter -----Original Message----- From: Unicode <[email protected]> On Behalf Of Ivan Panchenko via Unicode Sent: Monday, September 16, 2024 12:15 PM To: [email protected] Subject: Re: Position of the registered sign To make it clear: There is a semantic difference because superscripting makes it an annotation. Simply writing “Unicode®” with the circle on the baseline seems wrong to me because it is like writing “UnicodeReg. U.S. Pat. & Tm. Off.”. Another discrepancy that I noticed concerns the hourglass emojis. Originally, there was just one (⌛, U+231B). The reference glyph shows all of the sand below, in some designs, however, the sand is still flowing. Now that we have U+23F3 (⏳, hourglass with flowing sand), it would make sense that U+231B is shown without flowing sand; in some designs, however, this is not the case (perhaps to remain consistent with how it was before) and U+23F3 has a greater proportion of the sand at the top.
