A California Man Filed To Trademark "O-Block," The Chicago Block King Von, Chief Keef And Lil Durk Made Famous
A Gilroy, California man filed a USPTO trademark application for "O-Block" on Sept. 24, 2026, covering clothing plus movies, books and film. The name belongs to the Chicago block made famous by King Von, Chief Keef and Lil Durk. The application is pending and has not been approved.
Somebody from California is trying to own the name O-Block.
A man named Mark K. Hicks of Gilroy, California, filed a federal trademark application for "O" BLOCK, OBLOCK and O-BLOCK with the U.S. Patent and Trademark Office on Sept. 24, 2026, according to the USPTO's public record (serial number 50127577). He filed as an individual, with no attorney listed.
The application covers clothing, specifically jerseys and jackets, and also lists movies, books, publishing, print, radio and film. It was filed on an "intent to use" basis, which means he is saying he plans to use the name, not that he already sells anything under it. As of Friday, Oct. 16, the USPTO lists it as a new application still waiting for an examining attorney. Nothing has been approved.
The filing started spreading this week after attorney Mohammed "Moe" Gangat posted a breakdown on Oct. 15 asking whether it can actually hold up, and pages like My Mixtapez picked it up Friday.
O-Block is the nickname for Parkway Garden Homes, the apartment complex on South King Drive, between 63rd and 65th streets on Chicago's South Side. The name honors Odee Perry, who was killed in 2011. Chief Keef, Lil Durk, King Von and Fredo Santana all came up around it, and King Von named his 2020 album "Welcome to O'Block." Von was killed in Atlanta in November 2020.
Durk and Keef have both talked publicly about wanting to buy the complex. Neither has commented on the trademark filing.
A trademark application is only the first step. An examiner still has to review it, and if it gets published for opposition, anyone who believes they would be harmed by it can formally challenge it.
Sources: USPTO Trademark Status and Document Retrieval, serial 50127577 (checked Oct. 16, 2026); Mohammed Gangat on X (Oct. 15, 2026); My Mixtapez on X (Oct. 16, 2026). Photos: Lil Durk by Daniel X. O'Neil (CC BY 2.0); Parkway Garden Homes by Boscophotos (CC BY-SA 3.0), via Wikimedia Commons.