Lære Extracting Key Information from Contracts | Automating Legal Document Processing

Legal professionals often need to quickly identify and extract key information from contracts, such as the names of the parties involved, important dates, and specific obligations. Automating this process can save significant time and reduce the risk of overlooking critical details. By using Python, you can write scripts to scan contract text and pull out this essential information, making contract review and management more efficient.


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contract_text = """
This Agreement is made on March 15, 2023, between Alpha Corp (hereinafter referred to as 'Alpha') and Beta LLC (hereinafter referred to as 'Beta').
Alpha agrees to deliver the goods by April 1, 2023. Beta will make payment on or before April 15, 2023.
"""

# Extract dates using simple string methods
dates = []
for word in contract_text.split():
    # Look for months as a simple way to find dates
    if word in ["January", "February", "March", "April", "May", "June",
                "July", "August", "September", "October", "November", "December"]:
        # Assume the next two words are day and year
        idx = contract_text.split().index(word)
        date = " ".join(contract_text.split()[idx:idx+3])
        dates.append(date)

print("Extracted dates:", dates)

To understand how this extraction works, start by searching for keywords that indicate the type of information you want. In the case of dates, months of the year are a reliable starting point. The code above splits the contract text into words and checks each word to see if it matches a month name. When a month is found, it assumes the following two words are the day and year, and combines them using string slicing. This simple logic works for standard date formats and is easy to adapt for similar patterns. For more complex contracts, you might need to search for different keywords or use more advanced string operations, but the basic approach remains: identify a marker, then extract the surrounding text.


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contract_text = """
This Agreement is made on March 15, 2023, between Alpha Corp (hereinafter referred to as 'Alpha') and Beta LLC (hereinafter referred to as 'Beta').
Alpha agrees to deliver the goods by April 1, 2023. Beta will make payment on or before April 15, 2023.
"""

# Extract party names by finding capitalized words before 'hereinafter'
import re

party_names = []
matches = re.findall(r'([A-Z][a-zA-Z0-9\s]+)\s*\(hereinafter', contract_text)
for match in matches:
    party_names.append(match.strip())

print("Extracted party names:", party_names)

1. What is a common challenge when extracting information from contracts?

2. Fill in the blank: To find all dates in a contract, you can use the _______ method to search for patterns.

3. Why might regular expressions be useful for legal text extraction?

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Suggested prompts:

How can I extract specific obligations from the contract text?

Can you explain how the regular expression for party names works?

What are some ways to improve the accuracy of extracting information from more complex contracts?

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