PTAB challenges

As a senior PTAB practitioner analyzing US patent 5,490,216, it is critical to note that the provided boilerplate text stating "no AIA trial proceedings" is incorrect. This patent has a significant and dispositive history at the Patent Trial and Appeal Board (PTAB), which is confirmed by the patent's litigation record and public PTAB dockets. The following analysis is based on the actual PTAB proceedings that have taken place.

Proceedings overview

There have been at least six inter partes review (IPR) proceedings filed against US patent 5,490,216, resulting in two Final Written Decisions that canceled all claims, three denials of institution, and one procedural termination. This gives a defendant an exceptionally strong defensive posture: all 20 claims of the patent have been definitively canceled by the USPTO and this decision was affirmed by the Federal Circuit, rendering the patent permanently unenforceable.

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IPR2014-01453 — Sega of America, Inc. et al. v. Uniloc USA, Inc.

• Type: Inter Partes Review
• Filed: 2014-09-18
• Status: Final Written Decision finding all challenged claims unpatentable. This decision was affirmed on appeal.
• Judge panel: APJ Michael P. Tierney, Brian J. McNamara, and Scott E. Kamholz
• Petition grounds: Challenged claims 1-20 as obvious (§ 103) over the combination of WO 92/09160 ("Tan") and U.S. Patent No. 4,688,169 ("Joshi").
• Institution decision: Instituted on 2015-03-24. The panel determined there was a reasonable likelihood that the petitioner would prevail in showing that Tan, in combination with Joshi, taught all limitations of the challenged claims, including the core concepts of mode-switching based on a remote registration process and locking the software to a specific hardware platform.
• Final Written Decision: Issued on 2016-03-22. The Board found that claims 1-20 were unpatentable. The panel concluded that Tan taught the overarching registration and mode-switching system, and a person of ordinary skill would have been motivated to combine it with Joshi’s teaching of generating a unique machine ID to prevent unauthorized copying of registered software to other computers.
• Appeal: The patent owner appealed the FWD to the Federal Circuit. In case number 16-2407, the Federal Circuit summarily affirmed the PTAB's decision on 2017-05-22, cementing the invalidity of all claims.
• Defensive value: This proceeding is dispositive. The FWD, affirmed by the Federal Circuit, canceled all claims of the patent. Any infringement theory or demand letter based on any claim of US 5,490,216 is meritless and indefensible.

IPR2015-01026 — Ubisoft, Inc. v. Uniloc USA, Inc.

• Type: Inter Partes Review
• Filed: 2015-04-09
• Status: Final Written Decision finding all challenged claims unpatentable.
• Judge panel: APJ Brian J. McNamara, Scott E. Kamholz, and Georgianna W. Braden
• Petition grounds: Challenged claims 1-20 as obvious (§ 103) over the combination of Tan and Joshi. This was substantively the same argument as in the successful Sega IPR.
• Institution decision: Instituted on 2015-10-15.
• Final Written Decision: Issued on 2016-10-11. Similar to the Sega IPR, the Board found claims 1-20 unpatentable over the combination of Tan and Joshi. The panel stated: "Based on the record before us, we determine that Petitioner has shown by a preponderance of the evidence that claims 1–20 of the ’216 patent are unpatentable."
• Appeal: Not applicable, as the parallel appeal in the Sega case (16-2407) was already progressing and ultimately affirmed the same outcome.
• Defensive value: This proceeding provides a second, independent confirmation from the PTAB that all claims are invalid based on the same prior art. It reinforces the finality of the Sega decision and leaves no doubt as to the patent's unenforceability.

IPR2015-00178 — Electronic Arts Inc. v. Uniloc USA, Inc.

• Type: Inter Partes Review
• Filed: 2014-10-27
• Status: Institution Denied.
• Judge panel: APJ Michael R. Zecher, Brian J. McNamara, and Scott E. Kamholz
• Institution decision: Denied on 2015-05-04. The panel was not persuaded at the institution stage that the petitioner's arguments had established a reasonable likelihood of prevailing. This decision highlights the importance of detailed claim mapping and expert testimony, which the later, successful petitions from Sega and Ubisoft evidently provided more persuasively.
• Defensive value: Minimal. While the patent owner survived this specific challenge, the later institution and invalidation in the Sega and Ubisoft IPRs rendered this early denial moot. It serves as a reminder that an initial IPR failure does not preclude subsequent, better-argued petitions from succeeding.

IPR2016-00414 & IPR2016-00427 — Unified Patents Inc. v. Uniloc USA, Inc.

• Type: Inter Partes Review
• Filed: 2015-12-18 and 2015-12-22
• Status: Institution Denied (Redundant).
• Institution decision: Denied on 2016-07-06 for both petitions. The Board denied institution under 35 U.S.C. § 325(d), exercising its discretion to reject petitions that present substantially the same arguments and prior art that were already considered in prior proceedings. By this time, the Sega IPR (IPR2014-01453) had already received its Final Written Decision canceling all the claims.
• Defensive value: These denials have no negative defensive value; they were denied because the patent's claims had already been invalidated. They show an attempt by a defensive aggregator (Unified Patents) to ensure the invalidation held, but the PTAB deemed the actions unnecessary.

IPR2015-01207 — Wargaming Public Co. Ltd v. Uniloc USA, Inc.

• Type: Inter Partes Review
• Filed: 2015-05-12
• Status: Procedural Termination. The proceeding was terminated on 2015-09-17, likely due to a settlement between the parties which is common in co-pending district court litigation.
• Defensive value: None. The case did not proceed to a decision on the merits.

Strategic summary

The PTAB history of US patent 5,490,216 is a clear-cut case of a patent being invalidated through the IPR process. All claims, from 1 through 20, are now CANCELED. There are no sustained claims, narrowed claims, or untested claims. The patent is, for all practical purposes, void. The Final Written Decision in IPR2014-01453 and its subsequent affirmation by the Federal Circuit in case 16-2407 is the final word on this patent's validity.

The estoppel landscape is now moot. Because all claims have been canceled, there is nothing left to assert, and thus no need for a defendant to consider what prior art grounds are available or what estoppel effects (§ 315(e)) might apply to previous petitioners. The patent cannot be litigated. The pattern of litigation followed by multiple IPRs filed by different defendants (Sega, Ubisoft, Electronic Arts) demonstrates a classic and successful industry response to a broad, non-practicing entity (NPE) assertion campaign.

Recommended next steps

If you are a defendant who has received a demand letter or complaint asserting any claim of US patent 5,490,216, your response should be direct and firm. The patent is unenforceable.

1. Cite the Final Written Decision from the Sega IPR: You should explicitly reference IPR2014-01453, Paper 35 (Final Written Decision dated 2016-03-22).

2. Quote the conclusion:

   "For the reasons given above, we conclude that Petitioner has shown by a preponderance of the evidence that claims 1–20 of U.S. Patent No. 5,490,216 are unpatentable.
   Accordingly, it is
   ORDERED that claims 1–20 of U.S. Patent No. 5,490,216 are held unpatentable."

3. Cite the Federal Circuit Affirmation: You must also cite the Federal Circuit's judgment in Sega of America, Inc. v. Uniloc USA, Inc., Case 16-2407 (Fed. Cir. May 22, 2017), which affirmed the PTAB's decision without opinion.

Any attempt to assert this patent constitutes frivolous litigation. Inform the asserting party that you are aware the patent's claims have all been canceled and that continued assertion may warrant a motion for sanctions under Federal Rule of Civil Procedure 11.