65/100LFR Score
Ranked #1 because of its Google rating and practice area focus: 4.6★ from 52 Google reviews, listed on Google as “Patent attorney”.
Intellectual Property Lawyers in Castro Valley, CA: 2026 rankings
56 intellectual property lawyers ranked by LFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Highest LFR Score in Castro Valley: The Rapacke Law Group, P.A., LFR Score 65/100; 4.6★ from 52 Google reviews; open 24/7.
- 2
Open 24 hours (per Google): Patent PC, posts 24/7 hours; ranked #2 of 56.
- 20
Most-reviewed: Oguz Law, 1,091 Google reviews at 4.9★, the most of 56 ranked; ranked #20.
Rankings can't be bought. Lawyers can't pay to change their rank or score. How we rank
56 Castro Valley intellectual property lawyers are ranked here by LFR Score, from nine published factors. 5 are open 24/7, 13 open Saturdays and 10 open Sundays, based on posted hours. The median Google rating is 4.9★ across 56 rated law firms.
Top 10 intellectual property lawyers in Castro Valley at a glance
Ranked by our published LFR Score from public data, not by payment; a rank is not an endorsement or a prediction of results.
| Rank | Business | LFR Score | Google rating | Based in | Hours | Notable for |
|---|---|---|---|---|---|---|
| 1 | The Rapacke Law Group, P.A. | 65 | 4.6★ (52) | Mountain View, 21 mi away | Open 24 hrs (Google) | Top score |
| 2 | Patent PC | 65 | 5.0★ (25) | Santa Clara, 21 mi away | Open 24 hrs (Google) | Open 24 hours |
| 3 | Dana Legal Services | 64 | 5.0★ (76) | Menlo Park, 20 mi away | Sat · Evenings | — |
| 4 | Amir V. Adibi: Bay Area Patent Attorney, Trademark Law, & Patent Infringement Litigation | 64 | 5.0★ (102) | Pleasanton, 12 mi away | Evenings | — |
| 5 | Outlier Patent Attorneys, PLLC | 64 | 5.0★ (13) | San Francisco, 18 mi away | Open 24 hrs (Google) | — |
| 6 | Gerald R. Prettyman, Patent Attorney, Trademarks and Copyright, Registered California and Minnesota | 63 | 5.0★ (13) | Pleasanton, 10 mi away | Sat · Sun · Evenings | — |
| 7 | Stephen E. Zweig, PhD JD, Patent Attorney | 62 | 5.0★ (14) | Los Gatos, 19 mi away | Sat · Sun | — |
| 8 | Imperium Patent Works LLP | 62 | 4.9★ (58) | Pleasanton, 12 mi away | — | — |
| 9 | iPNOTE | 61 | 5.0★ (3) | Palo Alto, 19 mi away | Open 24 hrs (Google) | — |
| 10 | John Rizvi, P.A. - The Idea Attorneys | 61 | 4.8★ (4) | San Jose, 27 mi away | Open 24 hrs (Google) | — |
All 56 intellectual property lawyers in Castro Valley, in rank order
Ordered by LFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by our published LFR Score from public data, not by payment; a rank is not an endorsement or a prediction of results.
Scores below: based on 7 of 9 factors; bar status and recency not yet collected. Hatched segments mark factors we don't have yet.
#2 Patent PC
Based in Santa Clara, 21 mi away
65/100LFR ScoreRanked #2 because of its Google rating and practice area focus: 5.0★ from 25 Google reviews, listed on Google as “Patent attorney”.
Based in Menlo Park, 20 mi away
64/100LFR ScoreRanked #3 because of its Google rating and practice area focus: 5.0★ from 76 Google reviews, listed on Google as “Patent attorney”.
Based in Pleasanton, 12 mi away
64/100LFR ScoreRanked #4 because of its Google rating and practice area focus: 5.0★ from 102 Google reviews, listed on Google as “Patent attorney”.
Based in San Francisco, 18 mi away
64/100LFR ScoreRanked #5 because of its Google rating and practice area focus: 5.0★ from 13 Google reviews, listed on Google as “Patent attorney”.
#6 Gerald R. Prettyman, Patent Attorney, Trademarks and Copyright, Registered California and Minnesota
Based in Pleasanton, 10 mi away
63/100LFR ScoreRanked #6 because of its Google rating and practice area focus: 5.0★ from 13 Google reviews, listed on Google as “Patent attorney”.
Based in Los Gatos, 19 mi away
62/100LFR ScoreRanked #7 because of its Google rating and practice area focus: 5.0★ from 14 Google reviews, listed on Google as “Patent attorney”.
Based in Pleasanton, 12 mi away
62/100LFR ScoreRanked #8 because of its Google rating and practice area focus: 4.9★ from 58 Google reviews, listed on Google as “Patent attorney”.
#9 iPNOTE
Based in Palo Alto, 19 mi away
61/100LFR ScoreRanked #9 because of its Google rating and practice area focus: 5.0★ from 3 Google reviews, listed on Google as “Patent attorney”.
Based in San Jose, 27 mi away
61/100LFR ScoreRanked #10 because of its Google rating and practice area focus: 4.8★ from 4 Google reviews, listed on Google as “Patent attorney”.
Based in Los Altos, 20 mi away
61/100LFR ScoreRanked #11 because of its Google rating and practice area focus: 4.8★ from 59 Google reviews, listed on Google as “Intellectual property registry”.
Based in Walnut Creek, 14 mi away
60/100LFR ScoreRanked #12 because of its Google rating and practice area focus: 5.0★ from 22 Google reviews, listed on Google as “Patent attorney”.
Based in San Francisco, 18 mi away
59/100LFR ScoreRanked #13 because of its Google rating and practice area focus: 4.8★ from 21 Google reviews, listed on Google as “Patent attorney”.
Based in San Francisco, 19 mi away
59/100LFR ScoreRanked #14 because of its Google rating and practice area focus: 4.8★ from 23 Google reviews, listed on Google as “Patent attorney”.
Based in San Francisco, 19 mi away
59/100LFR ScoreRanked #15 because of its Google rating and practice area focus: 5.0★ from 47 Google reviews, listed on Google as “Law firm”.
Based in San Francisco, 21 mi away
59/100LFR ScoreRanked #16 because of its Google rating and practice area focus: 5.0★ from 51 Google reviews, listed on Google as “Law firm”.
#17 Dahyee Law Group
Based in Pleasanton, 10 mi away
59/100LFR ScoreRanked #17 because of its Google rating and practice area focus: 5.0★ from 3 Google reviews, listed on Google as “Patent attorney”.
#18 IPExcel Inc.
Based in San Francisco, 18 mi away
58/100LFR ScoreRanked #18 because of its Google rating and practice area focus: 4.7★ from 13 Google reviews, listed on Google as “Patent attorney”.
Based in San Jose, 23 mi away
58/100LFR ScoreRanked #19 because of its Google rating and practice area focus: 5.0★ from 14 Google reviews, listed on Google as “Patent attorney”.
#20 Oguz Law
Based in Walnut Creek, 15 mi away
58/100LFR ScoreRanked #20 because of its Google rating and review volume: 4.9★ from 1,091 Google reviews, the most in Castro Valley.
Based in San Jose, 27 mi away
58/100LFR ScoreRanked #21 because of its Google rating and practice area focus: 5.0★ from 15 Google reviews, listed on Google as “Patent attorney”.
Based in Walnut Creek, 16 mi away
58/100LFR ScoreRanked #22 because of its Google rating and practice area focus: 5.0★ from 8 Google reviews, listed on Google as “Patent attorney”.
Based in San Jose, 26 mi away
58/100LFR ScoreRanked #23 because of its Google rating and practice area focus: 4.3★ from 6 Google reviews, listed on Google as “Patent attorney”.
Based in San Mateo, 16 mi away
57/100LFR ScoreRanked #24 because of its Google rating and practice area focus: 3.8★ from 12 Google reviews, listed on Google as “Patent attorney”.
Based in Fremont, 13 mi away
57/100LFR ScoreRanked #25 because of its Google rating and practice area focus: 4.0★ from 4 Google reviews, listed on Google as “Patent attorney”.
Intellectual property lawyers ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in LFR Score order; each links to its profile. We publish the top 50 of 56 ranked intellectual property lawyers here; the rest are on their profiles.
Also serving Castro Valley
20 more intellectual property lawyers within 50 mi that we can't rank yet: too few reviews, or a practice area we couldn't confirm. Listed A to Z.
How we ranked Castro Valley intellectual property lawyers
We scored 56 Castro Valley intellectual property lawyers on nine factors, weighted as shown. A law firm is ranked when its practice area is confirmed and it has 3 or more Google reviews or a claimed profile. A law firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Attorney advertising businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Castro Valley data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Bar status | 10% | An active bar or law society record matched to a lawyer at the firm (not measured until a record source is loaded) | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly office hours, Saturday, Sunday, and phones answered 24/7 | Measured |
| Practice focus | 15% | How clearly the firm practises this area (its Google category and name) | Measured |
| Proximity | 5% | An office in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its Law Firms Ranked profile (free and paid earn the same) | Measured |
| Law Firms Ranked reviews | 10% | Verified client reviews collected by Law Firms Ranked: their rating and how many there are | Measured |
How to choose an intellectual property lawyer
- Check the lawyer’s status and any public discipline in the state bar or law society directory.
- Ask how many intellectual property law matters the lawyer handles each year, and who at the firm will do the work.
- Get the fee arrangement in writing: hourly, flat or contingency, and which costs are charged on top.
- Ask how and how often the firm will update you, and how fast it answers calls and emails.
- Read recent reviews for how the firm communicated and billed, not only for outcomes.
- For patents, check the lawyer is registered to practice before the patent office and has worked in your technical field.
- Meet more than one firm; many offer a short first consultation, sometimes free.
Questions to ask an intellectual property lawyer
- How would you approach a matter like mine, and what are the realistic options?
- How do you charge, and what will the total likely cost?
- Who will be my main contact, and how quickly do you reply?
- Are you registered with the patent office?
- Which official fees are not included in your fee?
- Is there any conflict of interest that would stop you representing me?
Terms explained
- Contingency fee
- A fee that is a share of the money recovered, paid only if there is a recovery. Common in injury cases; not allowed for criminal defense or for securing a divorce.
- Retainer
- Money paid up front and held in a trust account, which the lawyer draws on as fees are earned.
- Flat fee
- One set price for a defined piece of work, such as a will or an uncontested matter.
- Limited-scope representation
- Paying a lawyer for part of a matter only, such as reviewing documents or coaching for one hearing (also called unbundled services).
- Statute of limitations
- The deadline to file a lawsuit or charge. It differs by state or province and by type of claim.
- Good standing
- A lawyer’s status as active and eligible to practise with a state bar or law society.
- Law society
- The body that licenses and disciplines lawyers in a Canadian province or territory.
- Board certification
- Recognition in a field of law by a state program or an organisation accredited for that purpose. Lawyers may only claim it when they hold it, naming the certifying body.
- Attorney–client privilege
- The rule that keeps confidential communications between a client and lawyer, made for legal advice, out of court.
- Conflict check
- The search a firm runs before taking a matter to make sure it does not represent someone on the other side.
- Pro bono
- Legal work done for free, usually for people who cannot afford a lawyer.
- Legal aid
- Publicly funded legal help for people with low incomes, through legal aid offices, public defenders or provincial legal aid plans.
Intellectual property lawyers in Castro Valley: frequently asked questions
Which intellectual property lawyer has the highest LFR Score in Castro Valley?
By LFR Score, the highest-ranked intellectual property lawyer in Castro Valley, CA is The Rapacke Law Group, P.A. with an LFR Score of 65/100. It has 4.6★ from 52 Google reviews. It is open 24/7. Patent PC (#2) and Dana Legal Services (#3) follow. We ranked 56 intellectual property lawyers on nine factors, last updated November 9, 2026.
How many intellectual property lawyers are there in Castro Valley?
LawFirmsRanked ranks 56 intellectual property lawyers serving Castro Valley, CA. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.
Which intellectual property lawyers in Castro Valley are open 24/7?
5 ranked intellectual property lawyers in Castro Valley post 24/7 hours. The highest-ranked are The Rapacke Law Group, P.A. (#1), Patent PC (#2) and Outlier Patent Attorneys, PLLC (#5). Hours come from each law firm's Google listing as of November 2026, so call to confirm.
Which intellectual property lawyers in Castro Valley work on weekends?
13 of 56 ranked intellectual property lawyers post Saturday hours and 10 post Sunday hours. The highest-ranked open Saturdays are The Rapacke Law Group, P.A. (#1), Patent PC (#2) and Dana Legal Services (#3). Posted hours are office hours; many firms meet clients by appointment outside them.
What Google rating do Castro Valley intellectual property lawyers have?
The median Google rating among 56 rated intellectual property lawyers in Castro Valley is 4.9★, with a median of 10 reviews. Oguz Law has the most, 1,091 reviews, and ranks #20. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does LawFirmsRanked rank intellectual property lawyers?
Each intellectual property lawyer gets a 0–100 LFR Score from nine published factors, led by reputation (25%), practice focus (15%), review volume (10%) and recency (10%). A law firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only law firms with a confirmed practice area and 3 or more reviews, or a claimed profile, are ranked.
Do intellectual property lawyers outside Castro Valley count in this ranking?
Yes, if they are within 50 mi of the Castro Valley city center, our service radius for intellectual property lawyers. Each listing shows where the law firm is based and how far away it is. Proximity is 5% of the LFR Score, so a nearby law firm gets a small edge.
Can intellectual property lawyers pay to rank higher on LawFirmsRanked?
No. The LFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured law firms may appear above the list, labelled Attorney advertising and showing their honest rank.
How do intellectual property lawyers in Castro Valley, CA charge?
Intellectual property lawyers often charge a flat fee for trademark and patent filings (official fees are separate) and hourly rates for infringement disputes. Lawyers using Clio billed an average of $461 an hour in this area (Clio Legal Trends data, October 2026; all areas $362). Ask for the fee arrangement in writing before you agree.
Who can file a patent application for me?
Before the US Patent and Trademark Office, only registered patent attorneys and patent agents may prosecute patent applications for others. Trademark filings can be handled by any licensed attorney. This is general information, not legal advice.
How is this list of intellectual property lawyers in Castro Valley, CA ranked?
By LFR Score only, from public data on reviews, practice focus, office location and hours. Firms labelled “Attorney advertising” paid for that placement; payment never changes a rank, and a rank is not an endorsement.
Does a lawyer need an office in Castro Valley?
No, but the lawyer must be licensed in your state (or, for federal matters such as immigration, in some state). A local office makes meetings and court appearances easier, so proximity is one of our factors.
Update log for Castro Valley
- November 2026: LFR Scores recalculated for 56 intellectual property lawyers serving Castro Valley.
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