How Comprehensive Prior Art Searches Strengthen IPR Petitions and Improve PTAB Outcomes
Every Successful IPR Begins with Strong Prior Art
In the adversarial landscape of Inter Partes Review (IPR), the quality of the initial invalidity search is the single most significant predictor of success. While legal arguments frame the narrative, the prior art provides the ammunition. A petition is, ultimately, only as strong as its primary reference.
At MaxVal, we conducted a comprehensive review of our invalidity search performance in the last couple of years in various technologies. We tracked projects that were in IPR and analyzed the outcomes. The results demonstrate a direct correlation between our search findings and favorable legal outcomes ranging from strategic settlements to full patent invalidation for top-tier law firms.
The Ultimate Validation: Securing a Final Written Decision
The “gold standard” of any invalidity search is finding a reference strong enough to survive the institution phase, withstand the trial, and result in the cancellation of claims. This is a rare feat that requires a reference, leaving no room for interpretation.
In a recent engagement with a leading global law firm, the MaxVal Search team was tasked with challenging US8222516B2 and US8878053B2. The claims were complex, but our searchers identified a critical European reference, EP1732142A1.
This reference became the cornerstone of the petitions (Exhibits 1006). The result was decisive: the Patent Trial and Appeal Board (PTAB) issued Final Written Decisions to make the challenged claims unpatentable in both cases. This victory underscores the necessity of looking beyond standard US databases; often, the “killer” art is buried in foreign jurisdictions that standard searches miss.
Strategic Leverage: Driving Settlements Across Domains
While invalidation is the “knockout,” settlements are the strategic victories of the IP world. A settlement often indicates that the prior art presented was so threatening that the Patent Owner preferred to negotiate rather than risk a public loss.
MaxVal’s search methodology has proven effective in generating this leverage across diverse industries, from software to life sciences.
- While invalidating US9571833B2 (IPR2024-01505), our team located a combination of references (US20130077691A1 & US20110194609A1) that triggered a trial institution. Facing the high probability of invalidation during the trial phase, the opposition agreed to a Settlement After Institution.
- Demonstrating our cross-domain capabilities, MaxVal assisted a global law firm in a challenge against US11020031B1 and identified a key prior art, US6424847B1, which was used as Exhibit 1010 in IPR2024-00891. The strength of this art directly contributed to a successful settlement.
Featured Success Stories
A summary of recent IPR outcomes where MaxVal’s search expertise was utilized:
| Target Patent | IPR Case ID | MaxVal's References Submitted | Outcome |
|---|---|---|---|
| US 8,222,516, | IPR2024-01039 | Exhibit 1006: EP1732142A1 | Claims Invalidated (2026-01-12) |
| US 8,878,053 | IPR2024-01040 | Exhibit 1006: EP1732142A1 | Claims Invalidated (2026-01-12) |
| US 6,292,743 | IPR2024-00756 | Exhibit 1014: US6680694B1 | Settlement (2024-10-10) |
| US 8,996,693 | IPR2024-01507 | Exhibit 1016: US20040031037A1 | Settlement (2025-04-08) |
| US 9,571,833 | IPR2024-01505 |
Exhibit 1004: US20110194609A1 Exhibit 1005: US20130077691A1 |
Settlement (After Institution) (2025-04-03) |
| US 8,918,741 | IPR2024-01043 |
Exhibit 1004: US20070180492A1 Exhibit 1006: US7689939B1 |
Settlement (2025-04-02) |
| US 9,473,602 | IPR2024-00798 | Exhibit 1006: US20040214619A1 | Settlement (2025-04-02) |
| US 11,020,031 | IPR2024-00891 | Exhibit 1010: US6424847B1 | Settlement (2025-01-23) |
| US 9,287,982 | IPR2024-01287 | Exhibit 1006: US8831425B1 | Pending (Instituted) (2024-08-09) |
| US 10,877,233 | IPR2025-01218 | Exhibit 1005: US8516238B2 | Pending (Institution Decision: Grant) (2026-02-03) |
| US 11,032,111 | IPR2025-01220 | Exhibit 1005: US8516238B2 | Pending (Institution Decision: Grant) (2026-02-03) |
| US 11,012,252 | IPR2025-01219 | Exhibit 1005: US8516238B2 | Pending (Institution Decision: Grant) (2026-02-03) |
| US 9,402,120 | IPR2025-00690 | Exhibit 1002: US20110286615 | Not Instituted (Merits) (2025-09-15) |
| US 9,674,035 | IPR2025-00473 |
Exhibit 1008: US20080253771A1 Exhibit 1015: DPoE™ Operations and Support System Interface Specification DPoE-SP-OSSIv1.0-I01-110225 |
Not Instituted (Procedural) (2025-07-16) |
Adoption in Litigation
Litigation acts as a filter. Not every search leads to a lawsuit, but when a case does go to trial, the selection of prior art tells a powerful story about quality and trust.
In an industry where counsel often commissions multiple search firms or relies on internal teams, our references are consistently selected as the primary evidence in filed petitions.
- High Utilization: Our analysis shows that when our clients move to IPR, they frequently bypass other sources and build their arguments directly around the references we unearthed.
- Strategic Trust: This recurring selection by AmLaw 100 firms confirms that MaxVal’s work is litigation-grade, capable of meeting the rigorous threshold required for IPR filings.
ROI of Precision
An invalidity search should not be viewed as a commodity checkbox item; it is a strategic asset. The performance data from 2024–2025 confirms that references located by MaxVal are effective in meeting this objective.
By consistently delivering references that drive settlements and invalidations, MaxVal provides clients with the ultimate competitive advantage: leverage. Whether the goal is to force a quick settlement to save costs or to secure a Final Written Decision to clear the market, the victory begins with the search.
