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Challenging Unreliable Evidence. Protecting Your Rights.
Thousands of breathalyzer tests used across Massachusetts have been found to be unreliable, leading to wrongful charges, unjust convictions, and harm to innocent people.

We’re at the forefront of helping clients navigate the impact of the state’s breathalyzer controversy and defending those whose cases were affected.
Attorney Patrick Regan has deep experience challenging flawed evidence, exposing procedural errors, and ensuring that justice is restored for clients whose rights were compromised.
​What Happened
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In recent years, the Massachusetts courts determined that certain breathalyzer machines, particularly the Draeger Alcotest 9510, produced inaccurate results because of calibration and record-keeping failures.
As a result, many OUI (Operating Under the Influence) cases were reopened or dismissed, and thousands of individuals became eligible for relief.
If you were charged or convicted of OUI based on a breathalyzer test, you may still have options to challenge your case or clear your record.
How Regan Law Can Help
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Review your case for evidence affected by the breathalyzer ruling
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File motions for dismissal or to vacate past convictions
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Represent you in new or pending OUI cases involving breathalyzer evidence
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Ensure your rights are protected in every court proceeding
We combine technical knowledge with practical courtroom experience to challenge unreliable evidence and protect you from unjust outcomes.
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