Marc De Leeuw - Win Loss Records and Statistics

Sullivan & Cromwell, LLP
New York City
Represents primarily businesses and institutions in legal cases.

Performance Rating

About this Lawyer Data

Justice Toolbox publishes lawyer reviews based on win-loss records of actual court proceedings.

Our case data comes from a national database of court cases, which includes nine million court cases. Some U.S. cases are not in our database yet, and our data does not include (1) cases that are missing from court systems and (2) legal work that occurs outside of court proceedings.

All of the data on this page are estimates computed by an artificial intelligence program and are not manually verified. Technology does not always work, and our information could be wrong. However, we provide the details of every case our data is based on, at the bottom of the page, so you can check the results yourself.

Each case is different and the past record is no assurance that this lawyer will be successful in reaching a favorable result in any future case.

How are wins and losses determined?

How are attorneys rated?



Attorney Statistics for Cases in Our Database

Win Rate

Marc has won an estimated 60.00% of legal cases in our database that were fully litigated. This lawyer has won at least 6 legal cases and lost at least 4 legal cases. Win rates vary widely between different types of cases, so please view this attorney's individual practice area results below for more information.

The estimated win rate is computed based on fully litigated cases, meaning cases that were pursued to a win or loss. It does not count other case outcomes such as settlements and plea bargains.


Marc has handled at least 22 legal cases in our database.

Settlement Rate

Marc settles an estimated 0.00% of legal cases and litigates 100.00% of legal cases to conclusion, based on our database. This lawyer has settled at least 0 legal cases and litigated to conclusion at least 10 legal cases.

For purposes of this chart, both settlements and plea bargains are counted as settlements, as opposed to cases litigated to conclusion.

Win Rate Comparison

Marc's win rate is higher than the average win rate for attorneys handling legal cases primarily for businesses and institutions in our database. The bar graph shows Marc's win rate compared to the average.

Experience Comparison

Marc has handled more legal cases than the average attorney handling legal cases primarily for businesses and institutions in our database.


Marc has a solid win rate (estimated) in legal cases in our database and is rated an excellent 5.0 or 4.5 stars in numerous practice areas.

Marc excels as a business lawyer, earning high marks with a 5.0 star rating based on estimated win rate and experience.

Marc also handles contracts matters and earns a strong 4.5 star rating in that field.

Much more detailed information about this lawyer is presented in the charts and tables below.

Our Ratings

We rate Marc's performance in each case type, and we also show the attorney's case outcomes used to compute our rating. The data in the following table are AI-computed estimates based on cases in our database.

Click on the details button below to learn more about the attorney's rating and performance in that case type.

# Case Type
Win Rate Settlement /
Plea Rate
Total Cases Wins Losses Settled Plea
60.00% 0.00% 22 6 4 0 0 Details
60.00% 0.00% 22 6 4 0 0 Details
75.00% 0.00% 7 3 1 0 0 Details
50.00% 0.00% 10 4 4 0 0 Details
50.00% 0.00% 5 1 1 0 0 Details
Personal Injury
100.00% 0.00% 1 1 0 0 0 Details
  0.00% 1     0 0 Details


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Marc De Leeuw
New York City

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