What Will macOS 10.15 Be Called: Mammoth, Monterey, Rincon, Skyline, or Something Else?

Following Apple's shift to California-themed names for its Mac operating systems with OS X Mavericks back in 2013, Apple appeared to take steps to protect a number of other California-related names by filing for trademarks under a series of shell companies intended to mask the true identity of the applicant.

macos 10 15 names
All told, we identified 19 trademarks that were applied for under six different companies that all appeared to be Apple shell companies. Several of these names, including Yosemite, Sierra, and Mojave, have been used by Apple, while others have yet to be put to use.

Over the years, the trademark review process has played out for all of these applications, with most being subject to some form of back-and-forth between the applicants and examiners involving various approvals, denials, and suspensions. Even for approvals, however, owners are required to submit proof of the trademarks being used in commerce. This Statement of Use can be submitted up to 36 months after trademark approval, as long as the applicant regularly requests successive 6-month extensions to the original 6-month submission period.

With over five years having passed since the trademarks were applied for, many have now been abandoned, either at some point during the review process or through failure to provide proof of commercial use following approval. In fact, of the original 19 names that were included in the trademark applications, all but four of them have been either used by Apple or abandoned, with the remaining live applications being Mammoth, Monterey, Rincon, and Skyline.

Perhaps the most interesting one is Mammoth, which is likely related to Mammoth Lakes and Mammoth Mountain, a popular area for skiing and hiking in the Sierra Nevada mountains.

Notably, the trademark application for Mammoth was just approved earlier this month after many years of delays and a suspension. It's seen quite a bit of activity over the past six months, with the applicant Yosemite Research LLC having made some changes to reactivate the suspended application and shifting the attorney of record on the application to be noted trademark attorney Glenn Gundersen, who has worked with Apple on a number of intellectual property issues in the past.

mammoth trademark
The U.S. Patent and Trademark Office granted the registration for Mammoth and published it for opposition in March. After receiving no opposition to the trademark registration, the Mammoth trademark was officially allowed earlier this month on May 7. It's certainly possible that the timing is a coincidence, especially since the activity appears to have been driven by deadlines set by the Patent and Trademark Office in its communications regarding the suspended application, but the fact that the trademark was approved just weeks ago after years of relative inaction certainly caught our attention.

Monterey, a historic city and popular vacation spot on the Pacific coast, has been one of the popular macOS name options among our readers, so many will be happy to hear that this one remains a possibility. The trademark was applied for by Asilomar Enterprises LLC in December 2013, but wasn't allowed until June 12, 2018. One extension to the Statement of Use requirement has been granted, and Asilomar will have until June 2021 to prove commercial use of the name, provided additional extensions are requested.

Rincon is a popular surfing area in Southern California, and a trademark on that term was applied for by Landmark Associates LLC. The trademark was allowed on August 2, 2016, and Landmark has applied for successive extensions for the Statement of Use, with the fifth and final extension having been granted in January of this year. As a result, Landmark has until August of this year to prove the Rincon name is actively being used, or else the trademark will be lost.

Finally, Skyline likely relates to the scenic Skyline Boulevard that largely follows the ridge of the Santa Cruz Mountains running south from San Francisco, and Antalos Apps LLC filed for a trademark on the name in December 2013. The trademark was allowed on March 20, 2018, and the second Statement of Use extension was granted on February 28 of this year. The owner will have until March 2021 to prove use of Skyline in commerce, provided all necessary extensions are requested.

So what will macOS 10.15 be called? Will it be one of these four, or something completely different? Apple has drawn from the original list of trademark applications the majority of the time over the past five releases, but has selected something new a couple of times. One of Apple's presumed shell companies applied for a trademark on the name El Cap, but Apple opted to go with the famous mountain's full name of El Capitan for OS X 10.11, while 2017's macOS 10.13 High Sierra was positioned as a refinement of the previous year's macOS Sierra.

Related Forum: macOS Catalina

Popular Stories

iPhone SE 4 Thumb 1

iPhone SE 4 With Apple's Own 5G Modem 'Confirmed' to Launch in March

Tuesday November 19, 2024 12:12 pm PST by
Barclays analyst Tom O'Malley and his colleagues recently traveled to Asia to meet with various electronics manufacturers and suppliers. In a research note this week, outlining key takeaways from the trip, the analysts said they have "confirmed" that a fourth-generation iPhone SE with an Apple-designed 5G modem is slated to launch towards the end of the first quarter next year. In line with previo...
airtag purple

AirTag 2 Rumored to Launch Next Year With These New Features

Sunday November 17, 2024 5:18 am PST by
Apple released the AirTag in April 2021, so it is now three over and a half years old. While the AirTag has not received any hardware updates since then, a new version of the item tracking accessory is rumored to be in development. Below, we recap rumors about a second-generation AirTag. Timing Apple is aiming to release a new AirTag in mid-2025, according to Bloomberg's Mark Gurman....
Magic Mouse Next to Keyboard

No, Apple CEO Tim Cook Didn't Say He Prefers Logitech's MX Master 3 Over the Magic Mouse

Sunday November 17, 2024 3:03 pm PST by
While the Logitech MX Master 3 is a terrific mouse for the Mac, reports claiming that Apple CEO Tim Cook prefers that mouse over the Magic Mouse are false. The Wall Street Journal last month published an interview with Cook, in which he said he uses every Apple product every day. Soon after, The Verge's Wes Davis attempted to replicate using every Apple product in a single day. During that...
Generic iOS 18 Feature Real Mock

Apple Releases iOS 18.1.1 and iPadOS 18.1.1 With Security Fixes

Tuesday November 19, 2024 10:10 am PST by
Apple today released iOS 18.1.1 and iPadOS 18.1.1, minor updates to the iOS 18 and iPadOS 18 operating systems that debuted earlier in September. iOS 18.1.1 and iPadOS 18.1.1 come three weeks after the launch of iOS 18.1. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General > Software Update. Apple has also released iOS 17.7.2 for...
iPhone 17 Slim Feature Single Camera 1 Redux

'iPhone 17 Air' Rumored to Surpass iPhone 6 as Thinnest iPhone Ever

Monday November 18, 2024 1:07 pm PST by
In a research note with Hong Kong-based investment bank Haitong today, obtained by MacRumors, Apple analyst Jeff Pu said he agrees with a recent rumor claiming that the so-called "iPhone 17 Air" will be around 6mm thick. "We agreed with the recent chatter of an 6mm thickness ultra-slim design of the iPhone 17 Slim model," he wrote. If that measurement proves to be accurate, there would be ...
bug security vulnerability issue fix larry

Make Sure to Update: iOS 18.1.1 and macOS Sequoia 15.1.1 Fix Actively Exploited Vulnerabilities

Tuesday November 19, 2024 10:52 am PST by
The iOS 18.1.1, iPadOS 18.1.1, and macOS Sequoia 15.1.1 updates that Apple released today address JavaScriptCore and WebKit vulnerabilities that Apple says have been actively exploited on some devices. With the JavaScriptCore vulnerability, processing maliciously crafted web content could lead to arbitrary code execution. The WebKit vulnerability had the same issue with maliciously crafted...
at t turbo indicator iphone 16 pro max v0 8hrh7w5f3w1e1

AT&T Turbo Indicator Showing Up in iPhone Status Bar for Subscribers

Wednesday November 20, 2024 3:42 am PST by
AT&T has begun displaying "Turbo" in the iPhone carrier label for customers subscribed to its premium network prioritization service, according to reports on Reddit. The new indicator seems to have started appearing after users updated to iOS 18.1.1, but that could be just coincidence. Image credit: Reddit user No_Highlight7476 The Turbo feature provides enhanced network performance through ...
New Things Your iPhone Can Do in iOS 18

18 New Things Your iPhone Can Do in iOS 18.2

Wednesday November 13, 2024 2:09 am PST by
Apple is set to release iOS 18.2 next month, bringing the second round of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update brings several major advancements to Apple's AI integration, including completely new image generation tools and a range of Visual Intelligence-based enhancements. There are a handful of new non-AI related feature controls incoming as well....

Top Rated Comments

oneMadRssn Avatar
72 months ago
Cat-names were so much cooler.
Score: 58 Votes (Like | Disagree)
Khedron Avatar
72 months ago
Who cares. I'll never use it. This is the one that arbitrarily makes all my "unoptimised" applications no longer work, right?
Score: 45 Votes (Like | Disagree)
macdos Avatar
72 months ago
MacOS 10.15 Death Valley
Score: 40 Votes (Like | Disagree)
4487549 Avatar
72 months ago
Joshua Tree (pre-loaded with a free album from U2)
Score: 32 Votes (Like | Disagree)
baconsandwich Avatar
72 months ago
Mammoth would be terrible naming. A huge beast, slow and not very agile. Also extinct.
Score: 30 Votes (Like | Disagree)
cthart Avatar
72 months ago
Just drop the "10" -- that bit never changes anyway. Just call it macOS 15. Stop using names. iOS doesn't have names. tvOS doesn't have names. watchOS doesn't have names.
Score: 25 Votes (Like | Disagree)