Google fails to erase DODOcase VR patent claims as copying evidence outweighs its obviousness case

The story

Google has failed to invalidate selected claims in three patents covering a mechanical input for smartphone virtual-reality viewers. In a precedential decision issued November 5, the U.S. Court of Appeals for the Federal Circuit affirmed three Patent Trial and Appeal Board rulings that Google had not proved the surviving claims obvious. The court’s most consequential holding was not about cardboard headsets themselves, but about the legal weight of real-world evidence that an accused challenger copied and praised an inventor’s design.

DDC Technology’s patents—U.S. Patent Nos. 9,420,075, 10,528,199 and 11,093,001—share a specification directed to a viewer that encloses a smartphone. Early housings made the phone’s touchscreen difficult to reach. The claimed solution uses an external input mechanism that moves inside the housing and makes electrically detectable contact with the screen, allowing a user to interact without removing the phone.

Google challenged the patents through inter partes review, a Patent Office procedure for testing issued claims against patents and printed publications. Its obviousness theories combined a Japanese reference known as Kondo with a U.S. patent publication known as Chu. The board invalidated some challenged claims but left a substantial group standing, including claims 1 through 12, 14 and 18 through 20 of the ’075 patent; claims 1, 2, 4 through 6 and 17 through 26 of the ’199 patent; and claims 27 and 28 of the ’001 patent.

For key independent claims, the board found Google had shown relevant prior-art features and a reason to combine them. That did not end the analysis. DDC presented objective evidence of nonobviousness: the board found strong evidence that Google’s GCV2 viewer copied the DODOcase VR 1.2 product and inventor Patrick Buckley’s prototype, and gave moderate weight to praise from Google engineers who had seen prototype videos. The panel rejected Google’s argument that praise exchanged during a potential business relationship was inherently too biased to count.

The Federal Circuit said obviousness requires all relevant evidence to be weighed together. Google argued that the board treated DDC’s secondary evidence as a trump card after Google had made a largely unrebutted prior-art case. Judge Jimmie Reyna, writing for a unanimous three-judge panel, disagreed. The board had not called Google’s evidence strong or overwhelming, while it expressly characterized the copying evidence as strong. On that record, the court would not hold that Google’s case necessarily outweighed DDC’s proof.

The opinion also preserved claims for narrower reasons. It upheld the board’s construction of a lever as a stiff body pivoted on a fulcrum and rejected an interpretation of “disposed on” broad enough to cover connections far removed from the recited component. For two claims in the ’001 patent, Google did not cure problems the board had identified at institution. One theory treated the same biasing member as both part of a linkage element and a memory material coupled to that linkage, without reconciling how the component could be coupled to itself.

Those procedural points carry a separate warning for patent challengers. An institution decision is not only permission to proceed; it can flag gaps that must be answered in the petitioner’s reply. The court held that Google forfeited a new claim-construction argument for claim 28 because it had not developed that position before the board, even after the board invited more argument and evidence.

The outcome should not be overstated. The Federal Circuit did not decide that Google infringed any DDC patent, award damages or restore claims that the board had already found unpatentable. It reviewed the board’s surviving-claim judgments under appellate standards that defer to supported factual findings. Bloomberg Law and IPWatchdog independently reported the result as a failed attempt by Google to eliminate the remaining VR-viewer claims, not as a final infringement victory for DDC.

INNOVOX analysis: the case is a reminder that invention records extend beyond drawings and claim language. A dated prototype, product comparison and contemporaneous engineer emails helped an inventor-backed patent owner defend claims against a sophisticated prior-art attack. That does not make copying synonymous with patentability, and independent creation does not prove obviousness. It means the market’s first reaction to a working design can reveal whether the advance looked routine before litigation began.

What to watch next is whether Google seeks panel rehearing, en banc review or Supreme Court review, and how the surviving claims affect DDC’s enforcement strategy. The broader signal will come from later PTAB cases: petitioners will argue that their prior-art combinations are stronger, while patent owners will build more detailed evidence of copying, praise and product lineage. The precedential opinion makes clear that those facts belong in the final balance rather than in a ceremonial appendix.

INNOVOX analysis

The opinion gives product-history evidence practical force in inter partes review. Prior art still anchors obviousness, but credible records of copying and contemporary technical praise can change the result when the petitioner’s case is not overwhelming. For inventors, preserved prototypes, emails and design chronology may therefore matter nearly as much as the patent file.

What to watch

Watch for a rehearing petition, any Supreme Court request and the effect on DDC’s stayed or parallel enforcement cases. Future PTAB petitioners will also test how much copying and praise evidence is needed when the prior-art case is stronger than Google’s was here.