Separately, Apple has pursued its own former employees for trade secret theft. A notable case involved former Vision Pro engineer Di Liu, which Apple settled in March 2026 with a public apology and an agreement to return confidential material . Apple also sued former Apple Watch engineer Chen Shi in August 2025, alleging he stole secrets for his new employer, Oppo . However, none of these Apple-filed cases name OpenAI as a defendant or directly involve the ChatGPT maker.

The Deteriorating Apple-OpenAI Partnership: What Went Wrong

The partnership between Apple and OpenAI was formally announced at Apple's WWDC in June 2024, integrating ChatGPT into Siri, Image Playground, and other features across iOS, iPadOS, and macOS . By May 2026, the relationship was described as "strained" .

OpenAI's primary complaint is that the partnership delivered far less value than expected. According to a Bloomberg report published in May 2026, OpenAI believes it did not receive the anticipated commercial or strategic advantages from the ChatGPT-Siri integration . OpenAI's legal team has been working with an external law firm to explore options, which could include a formal notice alleging a breach of contract . An anonymous OpenAI official told Bloomberg, "From a product standpoint, we have done everything necessary. They have not, and even worse, they haven't made a genuine attempt."

A critical turning point came in early 2026, when Apple confirmed it was using Google's Gemini models to power its revamped Siri and Apple Intelligence features. In a joint statement, Apple and Google said their technology "provides the most capable foundation" . This effectively sidelined OpenAI from the core of Apple's next-generation AI architecture, changing its role from a primary partner to an optional component .

Additional factors include Apple's own AI struggles. The company delayed the launch of its promised AI-powered Siri, originally expected in 2024, and when a new version was finally delivered at WWDC in June 2026, it was positioned as less ambitious than competitors' offerings .

The 'io' Trademark Dispute: High Stakes for OpenAI's Consumer Hardware Ambitions

OpenAI's push into physical consumer hardware, a critical bet for controlling the AI-device interface, is under serious legal and branding pressure. In May 2025, OpenAI formally acquired io Products, a startup co-founded by legendary Apple designer Jony Ive, with a device not expected to ship until 2027 .

The venture was immediately hit with a trademark infringement lawsuit from iyO Inc., maker of the "IYO ONE" AI in-ear computer. iyO argued that "io" is confusingly similar to "iyO," as both names are phonetically identical . The court has consistently ruled in iyO's favor:

• In June 2025, a temporary restraining order forced OpenAI to scrub "io" branding from its website .
• In December 2025, a federal appeals court upheld the restraining order, preventing OpenAI from using the name .
• In February 2026, OpenAI formally abandoned the "io" branding in a court filing .
• In April 2026, a federal judge granted iyO a preliminary injunction, finding iyO was likely to succeed on the merits of its trademark claim and barring OpenAI, Sam Altman, Jony Ive, and io Products from using the mark . Judge Trina L. Thompson questioned the sincerity of OpenAI's abandonment, calling its earlier actions a "red flag" .

The trade secret allegations were added to this case in March 2026, and in May 2026, iyO secured litigation funding from Omni Bridgeway, a publicly listed global litigation funder, to pursue the case on equal footing .

The key open question remains: whether Apple itself has any direct legal role in the iyO-OpenAI matter. While many key employees at io — including Tang Tan, Evans Hankey, and Marwan Rammah — are former Apple designers, Apple has not publicly filed suit against OpenAI over trade secrets . The conflict is currently a proxy fight, with a well-funded startup pursuing an aggressive legal strategy that ties together trademark infringement and trade secret misappropriation claims against one of the world's most valuable AI companies.

Separately, Apple has pursued its own former employees for trade secret theft. A notable case involved former Vision Pro engineer Di Liu, which Apple settled in March 2026 with a public apology and an agreement to return confidential material . Apple also sued former Apple Watch engineer Chen Shi in August 2025, alleging he stole secrets for his new employer, Oppo . However, none of these Apple-filed cases name OpenAI as a defendant or directly involve the ChatGPT maker.

The Deteriorating Apple-OpenAI Partnership: What Went Wrong

The partnership between Apple and OpenAI was formally announced at Apple's WWDC in June 2024, integrating ChatGPT into Siri, Image Playground, and other features across iOS, iPadOS, and macOS . By May 2026, the relationship was described as "strained" .

OpenAI's primary complaint is that the partnership delivered far less value than expected. According to a Bloomberg report published in May 2026, OpenAI believes it did not receive the anticipated commercial or strategic advantages from the ChatGPT-Siri integration . OpenAI's legal team has been working with an external law firm to explore options, which could include a formal notice alleging a breach of contract . An anonymous OpenAI official told Bloomberg, "From a product standpoint, we have done everything necessary. They have not, and even worse, they haven't made a genuine attempt."

A critical turning point came in early 2026, when Apple confirmed it was using Google's Gemini models to power its revamped Siri and Apple Intelligence features. In a joint statement, Apple and Google said their technology "provides the most capable foundation" . This effectively sidelined OpenAI from the core of Apple's next-generation AI architecture, changing its role from a primary partner to an optional component .

Additional factors include Apple's own AI struggles. The company delayed the launch of its promised AI-powered Siri, originally expected in 2024, and when a new version was finally delivered at WWDC in June 2026, it was positioned as less ambitious than competitors' offerings .

The 'io' Trademark Dispute: High Stakes for OpenAI's Consumer Hardware Ambitions

OpenAI's push into physical consumer hardware, a critical bet for controlling the AI-device interface, is under serious legal and branding pressure. In May 2025, OpenAI formally acquired io Products, a startup co-founded by legendary Apple designer Jony Ive, with a device not expected to ship until 2027 .

The venture was immediately hit with a trademark infringement lawsuit from iyO Inc., maker of the "IYO ONE" AI in-ear computer. iyO argued that "io" is confusingly similar to "iyO," as both names are phonetically identical . The court has consistently ruled in iyO's favor:

• In June 2025, a temporary restraining order forced OpenAI to scrub "io" branding from its website .
• In December 2025, a federal appeals court upheld the restraining order, preventing OpenAI from using the name .
• In February 2026, OpenAI formally abandoned the "io" branding in a court filing .
• In April 2026, a federal judge granted iyO a preliminary injunction, finding iyO was likely to succeed on the merits of its trademark claim and barring OpenAI, Sam Altman, Jony Ive, and io Products from using the mark . Judge Trina L. Thompson questioned the sincerity of OpenAI's abandonment, calling its earlier actions a "red flag" .

The trade secret allegations were added to this case in March 2026, and in May 2026, iyO secured litigation funding from Omni Bridgeway, a publicly listed global litigation funder, to pursue the case on equal footing .

The key open question remains: whether Apple itself has any direct legal role in the iyO-OpenAI matter. While many key employees at io — including Tang Tan, Evans Hankey, and Marwan Rammah — are former Apple designers, Apple has not publicly filed suit against OpenAI over trade secrets . The conflict is currently a proxy fight, with a well-funded startup pursuing an aggressive legal strategy that ties together trademark infringement and trade secret misappropriation claims against one of the world's most valuable AI companies.