USPTO Examiner LO ANDREW S - Art Unit 3784

Examiner LO, ANDREW S - Prosecution Strategy Guide

Executive Summary

Examiner LO, ANDREW S works in Art Unit 3784 and has examined 462 patent applications in our dataset. With an allowance rate of 80.7%, this examiner has an above-average tendency to allow applications. Applications typically reach final disposition in approximately 23 months.

Allowance Patterns

Examiner LO, ANDREW S's allowance rate of 80.7% places them in the 51% percentile among all USPTO examiners. This examiner has an above-average tendency to allow applications.

Office Action Patterns

On average, applications examined by LO, ANDREW S receive 1.23 office actions before reaching final disposition. This places the examiner in the 16% percentile for office actions issued. This examiner issues significantly fewer office actions than most examiners.

Prosecution Timeline

The median time to disposition (half-life) for applications examined by LO, ANDREW S is 23 months. This places the examiner in the 88% percentile for prosecution speed. Applications move through prosecution relatively quickly with this examiner.

Interview Effectiveness

Conducting an examiner interview provides a +16.0% benefit to allowance rate for applications examined by LO, ANDREW S. This interview benefit is in the 56% percentile among all examiners. Recommendation: Interviews provide an above-average benefit with this examiner and are worth considering.

Request for Continued Examination (RCE) Effectiveness

When applicants file an RCE with this examiner, 29.8% of applications are subsequently allowed. This success rate is in the 57% percentile among all examiners. Strategic Insight: RCEs show above-average effectiveness with this examiner. Consider whether your amendments or new arguments are strong enough to warrant an RCE versus filing a continuation.

After-Final Amendment Practice

This examiner enters after-final amendments leading to allowance in 62.8% of cases where such amendments are filed. This entry rate is in the 88% percentile among all examiners. Strategic Recommendation: This examiner is highly receptive to after-final amendments compared to other examiners. Per MPEP § 714.12, after-final amendments may be entered "under justifiable circumstances." Consider filing after-final amendments with a clear showing of allowability rather than immediately filing an RCE, as this examiner frequently enters such amendments.

Appeal Withdrawal and Reconsideration

This examiner withdraws rejections or reopens prosecution in 33.3% of appeals filed. This is in the 5% percentile among all examiners. Strategic Insight: This examiner rarely withdraws rejections during the appeal process compared to other examiners. If you file an appeal, be prepared to fully prosecute it to a PTAB decision. Per MPEP § 1207, the examiner will prepare an Examiner's Answer maintaining the rejections.

Petition Practice

When applicants file petitions regarding this examiner's actions, 43.6% are granted (fully or in part). This grant rate is in the 36% percentile among all examiners. Strategic Note: Petitions show below-average success regarding this examiner's actions. Ensure you have a strong procedural basis before filing.

Examiner Cooperation and Flexibility

Examiner's Amendments: This examiner makes examiner's amendments in 0.0% of allowed cases (in the 47% percentile). This examiner makes examiner's amendments less often than average. You may need to make most claim amendments yourself.

Quayle Actions: This examiner issues Ex Parte Quayle actions in 7.5% of allowed cases (in the 86% percentile). Per MPEP § 714.14, a Quayle action indicates that all claims are allowable but formal matters remain. This examiner frequently uses Quayle actions compared to other examiners, which is a positive indicator that once substantive issues are resolved, allowance follows quickly.

Prosecution Strategy Recommendations

Relevant MPEP Sections for Prosecution Strategy

• MPEP § 713.10: Examiner interviews - available before Notice of Allowance or transfer to PTAB
• MPEP § 714.12: After-final amendments - may be entered "under justifiable circumstances"
• MPEP § 1002.02(c): Petitionable matters to Technology Center Director
• MPEP § 1004: Actions requiring primary examiner signature (allowances, final rejections, examiner's answers)
• MPEP § 1207.01: Appeal conferences - mandatory for all appeals
• MPEP § 1214.07: Reopening prosecution after appeal