Diana Yiwei Tsai, Business Attorney in Chicago, Illinois

Diana concentrates on business and m&a. Each area below outlines the kind of case Diana handles, typical outcomes to expect, and how the intake process starts.

• Business

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• M&A

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Diana's primary office is at 10 S. Wacker Dr., Ste. 2300, Chicago, IL, 60606-7509. In-person meetings are by appointment; a phone intake usually comes first.

Working with a new business attorney should feel structured. Here's how the first two conversations with Diana usually go, from the moment you request a consult to the day representation begins.

Diana discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in business practice — ask which fits.

• How much does it cost to hire Diana for a business case?

  Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Diana walks through the likely range during the consult so there are no surprises.

• Does Diana offer a free consultation?

  Diana charges for the initial consult; that fee is credited toward representation if you retain Diana's office. Some business attorneys offer free consults — check Diana's current terms during booking.

• How long do business cases in Illinois typically take?

  Simple business matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Diana gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

• Can Diana take my case if I'm outside Chicago?

  Diana is licensed in Illinois. Matters governed by Illinois law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Diana will tell you if the case is a fit or refer you to someone closer to your court.

• What should I bring to my first meeting with Diana?

  Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Diana will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

• Is Diana accepting new business clients right now?

  Diana's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.