NBA Files Trademark for 'ABA Challenge Series' as Brooklyn Nets Lead League-Wide ABA Celebration

The NBA appears poised for a significant celebration of its American Basketball Association roots, with newly uncovered legal filings and team announcements pointing toward a coordinated recognition of one of basketball's most influential eras. The league's recent trademark application for "ABA CHALLENGE SERIES" suggests plans for special events that would complement the Brooklyn Nets' already announced ABA-themed anniversary celebrations, creating what could become the most comprehensive acknowledgment of ABA history in decades.

NBA's Strategic Trademark Filing

Discovered by a Sacramento Kings fan account on social media platform X, the NBA's June 23 filing with the United States Patent and Trademark Office seeks to secure rights to both the term "ABA CHALLENGE SERIES" and an accompanying wordmark. The filing's current "live" and "pending" status indicates active development of this intellectual property, with the stated purpose covering "live basketball games and basketball exhibitions." This legal move coincides precisely with the 50th anniversary of the historic 1976 ABA-NBA merger, suggesting the league may be preparing more than just cosmetic celebrations.

The timing of this trademark application aligns strategically with multiple commemorative opportunities. Beyond the merger anniversary, 2026-27 marks the Brooklyn Nets' 60th season since their founding as the New Jersey Americans in 1967 before joining the ABA. The league appears to be leveraging these converging milestones to create a multifaceted celebration of the ABA's enduring influence on professional basketball.

Brooklyn Nets' Frontline ABA Celebration

The Brooklyn Nets have positioned themselves at the forefront of this historical recognition with their announced "ABA Night" scheduled for November 18. Veteran basketball reporter Peter Vecsey revealed that this event will bring together all surviving players and coaches from the franchise's 1974 and 1976 ABA championship teams, creating a rare gathering of the organization's most successful squads. These teams, led by the iconic Julius Erving, represent the Nets' only two championships in their history.

The Nets' celebration includes a Julius Erving bobblehead giveaway, honoring the Hall of Famer who became the face of the ABA before his legendary NBA career. This tangible connection to the team's ABA past underscores how deeply the franchise is embracing its roots during this anniversary season. The Nets' schedule further emphasizes these historical ties, with multiple matchups against their fellow ABA-originated franchises - two games against the San Antonio Spurs and Denver Nuggets, and four against the Indiana Pacers.

The Four ABA Survivors

When the ABA merged with the NBA in 1976, only four teams made the transition: the Nets, Nuggets, Pacers, and Spurs. These franchises represent the living legacy of the ABA in today's NBA, having maintained various degrees of connection to their pre-merger histories. The Nets' aggressive celebration of their ABA past this season appears to be part of a broader pattern among these teams in recent years.

Each of these organizations has occasionally worn ABA throwback uniforms, but the "ABA Challenge Series" trademark suggests the league may be orchestrating a more unified celebration. The multiple games between these teams during the season provide natural opportunities for coordinated events. The trademark's wording indicates potential competitive elements beyond uniform changes, possibly including special exhibitions or themed competitions that highlight the ABA's unique contributions to basketball.

The ABA's Lasting Impact

The American Basketball Association operated from 1967 to 1976 as a bold competitor to the established NBA, introducing innovations that permanently changed professional basketball. The league's signature red, white, and blue basketball became its visual hallmark, while its introduction of the three-point line - initially viewed as a gimmick - became one of basketball's most consequential rule changes. The ABA's emphasis on flashy play and individual flair, exemplified by stars like Julius Erving, George Gervin, and David Thompson, helped shape the modern entertainment-focused NBA product.

Beyond rules and style, the ABA proved instrumental in expanding professional basketball's geographic footprint, planting teams in markets the NBA had overlooked. The four surviving franchises represent this legacy, with the Spurs becoming a Texas institution, the Pacers anchoring Indiana basketball, the Nuggets establishing Denver as an NBA market, and the Nets maintaining northeastern roots despite multiple relocations.

Unanswered Questions and Fan Speculation

The discovery of the trademark filing has sparked widespread speculation among basketball historians and fans about the NBA's potential plans. Social media discussions have proposed various formats for the "ABA Challenge Series," ranging from a round-robin tournament among the four ABA-originated teams to special regular season games with full ABA-era aesthetics including the colorful ball and retro uniforms.

Notably absent is any official confirmation from the NBA or the four legacy teams about the specific nature of these plans. The Nets have only confirmed their November 18 ABA Night, while the league has remained silent about the trademark filing. This information gap has created anticipation about whether the celebration will extend beyond symbolic gestures to include competitive elements that truly honor the ABA's distinct brand of basketball.

The Significance of This Celebration

The NBA's apparent plans to highlight its ABA roots reflect several important trends in professional sports. The league has increasingly recognized the marketing power of nostalgia, with throwback uniforms and anniversary celebrations proving consistently popular with fans. The ABA's vibrant history and visual identity offer particularly rich material for such initiatives.

For the four ABA-originated franchises, this potential league-wide celebration represents an opportunity to strengthen their historical identities. The Nets, in particular, stand to benefit as they emphasize their ABA championships during a period of rebuilding. More broadly, honoring the ABA acknowledges how this rival league forced the NBA to evolve, from adopting the three-point line to embracing a more entertainment-focused presentation. As the NBA continues to innovate with tournaments like the In-Season Tournament, recognizing the ABA's legacy serves as a reminder that basketball's progress often comes from bold challenges to convention.