Call: +1 786-791-3106
Free Consult
Imigrar.com - Immigration Legal Services

Immigration judge

O'Sullivan, Maureen

Boston Immigration Court

How current these figures are

Captured October 23, 2026 — 13 days ago. Decisions made since then are not included.

Boston Immigration Court

2,372

Lifetime decisions on record

Grant rate, last 12 months on record

96.7%

150 decisions · 12 months ending April 2025

10.0%

FY2026 court average

Grant-rate trend

Each point is the grant rate across the 12 months ending in that month — a rolling window, not a single month on its own. A point appears only where those 12 months hold at least 25 decisions. A rolling window covers a much shorter span than the lifetime figure above, so the two can differ materially; both are correct measures of different periods.

0%25%50%75%100%May 2022Dec 2022Jul 2023Feb 2024Sep 2024Apr 2025Month each 12-month window ends96.7%93.0% — 12 months ending May 2022 (358 decisions)93.0% — 12 months ending Jun 2022 (356 decisions)92.2% — 12 months ending Jul 2022 (360 decisions)93.4% — 12 months ending Aug 2022 (351 decisions)93.8% — 12 months ending Sep 2022 (370 decisions)92.6% — 12 months ending Oct 2022 (380 decisions)92.3% — 12 months ending Nov 2022 (379 decisions)92.2% — 12 months ending Dec 2022 (374 decisions)91.8% — 12 months ending Jan 2023 (379 decisions)91.7% — 12 months ending Feb 2023 (372 decisions)92.6% — 12 months ending Mar 2023 (349 decisions)92.1% — 12 months ending Apr 2023 (340 decisions)90.8% — 12 months ending May 2023 (327 decisions)90.1% — 12 months ending Jun 2023 (322 decisions)90.3% — 12 months ending Jul 2023 (320 decisions)89.6% — 12 months ending Aug 2023 (317 decisions)89.1% — 12 months ending Sep 2023 (285 decisions)90.6% — 12 months ending Oct 2023 (266 decisions)91.3% — 12 months ending Nov 2023 (263 decisions)92.7% — 12 months ending Dec 2023 (286 decisions)93.8% — 12 months ending Jan 2024 (291 decisions)93.7% — 12 months ending Feb 2024 (287 decisions)93.2% — 12 months ending Mar 2024 (250 decisions)94.5% — 12 months ending Apr 2024 (236 decisions)95.5% — 12 months ending May 2024 (224 decisions)96.8% — 12 months ending Jun 2024 (222 decisions)98.2% — 12 months ending Jul 2024 (218 decisions)99.1% — 12 months ending Aug 2024 (214 decisions)99.5% — 12 months ending Sep 2024 (206 decisions)99.5% — 12 months ending Oct 2024 (196 decisions)99.5% — 12 months ending Nov 2024 (188 decisions)99.3% — 12 months ending Dec 2024 (148 decisions)97.6% — 12 months ending Jan 2025 (127 decisions)97.5% — 12 months ending Feb 2025 (120 decisions)97.7% — 12 months ending Mar 2025 (132 decisions)96.7% — 12 months ending Apr 2025 (150 decisions)

9 months are not plotted: the 12 months ending there held fewer than 25 decisions.

Monthly decisions

Showing the most recent 24 months on record. Months with no decisions are not listed.

Decisions and grant rate by month for this judge
MonthDecisionsGrant rate
April 202520Not reported
March 202525100.0%
February 202510Not reported
January 202512Not reported
December 202413Not reported
November 20246Not reported
October 20246Not reported
September 20246Not reported
August 202412Not reported
July 202416Not reported
June 202416Not reported
May 20248Not reported
April 20242Not reported
March 202413Not reported
February 202417Not reported
January 202433100.0%
December 202353100.0%
November 202314Not reported
October 202316Not reported
September 202314Not reported
August 202316Not reported
July 202320Not reported
June 202318Not reported
May 202320Not reported

Related pages

Source and method

These figures come from case data released by the Executive Office for Immigration Review (EOIR) under the Freedom of Information Act, published by the Deportation Data Project. Imigrar did not produce or estimate them.

Captured on October 23, 2026, 13 days ago. The record covers decisions from April 1998 through April 2025; nothing filed or decided after April 2025 appears here.

Grant rates are historical aggregates. They describe decisions already made. They do not predict the outcome of any individual case, and no figure on this page should be read as a forecast of what will happen in yours.

This page is informational only and is not legal advice. Reading it does not create an attorney-client relationship. Only the official EOIR record is authoritative.

Open the source data — Deportation Data Project

Questions about your own case?

Statistics cannot tell you what will happen in your case. A consultation can tell you what your options are.

Request a consultationCall 786-791-3106