Timon,

Each lawyer has their own style of writing. You will also see this reflected in corporate publications too. At one company I worked for the marketing department spelled the company name in all capital letters but the legal side spelled it upper and lower case. And Legal always used "The" in the company name and yet marketing did not. It was a battle of wills every time a document was created.

Looking at your example, "the" is used in the 1st sentence, so it is not needed in part "b" as it is implied. It could be there. It is simply a style choice by the lawyer.