Summary
The U.S. Patent Trial and Appeal Board (PTAB) has issued a landmark decision dismissing Inter Partes Review (IPR) petitions filed by Chinese display giant Tianma Microelectronics against LG Display. The ruling establishes that foreign sovereign entities—and their instrumentalities—do not qualify as 'persons' under the America Invents Act (AIA), rendering them ineligible to challenge patents via the PTAB.
The Event
In a series of recent decisions, the PTAB denied the institution of IPRs filed by Tianma Microelectronics, which sought to invalidate several patents held by LG Display. The core of the rejection was not the merits of the prior art, but the legal standing of the petitioner. LG Display successfully argued that Tianma, due to its ownership structure and relationship with the Chinese government, should be treated as a foreign sovereign. Following the logic of the U.S. Supreme Court’s 2019 decision in Return Mail, Inc. v. United States Postal Service, the PTAB concluded that the term 'person' in the AIA excludes sovereign entities, and this exclusion extends to foreign governments and their agencies.
Context
The Return Mail precedent originally determined that the U.S. federal government is not a 'person' capable of petitioning for IPR, Post-Grant Review (PGR), or Covered Business Method (CBM) review. This new ruling clarifies a long-standing ambiguity: whether 'sovereign' applies strictly to the U.S. government or encompasses foreign states as well. For the IP industry, this is a significant shift. Many global technology leaders, particularly from China, operate with varying degrees of state ownership or control. By classifying these entities as 'instrumentalities' of a foreign state, the USPTO is significantly narrowing the avenues through which these companies can challenge U.S. patent validity.
Implications
For IP practitioners and global corporations, the implications are three-fold:
- Defense Strategy: Patent owners facing challenges from state-linked competitors now have a powerful procedural defense. If a petitioner can be characterized as an arm of a foreign state, the IPR may be dismissed before the merits are even considered.
- Litigation Venue: Foreign sovereign entities barred from the PTAB must now rely on U.S. District Courts for patent challenges. Unlike the PTAB, District Courts apply a 'clear and convincing' evidence standard for invalidity, which is significantly harder to meet than the PTAB's 'preponderance of the evidence' standard.
- Due Diligence in Licensing: Companies entering into licensing or joint venture agreements with state-owned enterprises (SOEs) must factor in that these SOEs may lack the ability to use the PTAB as a leverage tool in future disputes.
Outlook
This decision is likely to be appealed to the Court of Appeals for the Federal Circuit (CAFC). The central question will be the definition of an 'instrumentality.' How much state ownership is required to transform a commercial corporation into a sovereign entity for AIA purposes? Furthermore, this ruling may prompt a reciprocal response from foreign patent offices, potentially affecting how U.S. entities are treated in international patent challenges. Practitioners should closely monitor the ownership transparency of petitioners in all future PTAB proceedings.
